Caterpillar Cat D7H TRACK-TYPE TRACTOR (Prefix 3XG) Service Repair Manual Instant Download.pdf

Service Repair Manual
Models
D7H TRACK-TYPE TRACTOR

Shutdown SIS
Previous Screen
Product: TRACK-TYPE TRACTOR
Model: D7H TRACK-TYPE TRACTOR 3XG
Configuration: D7H & D7H LGP SERIES II TRACTOR / POWERSHIFT / 3XG05500-UP (MACHINE) POWERED BY 3306 ENGINE
Disassembly and Assembly
D7H SERIES II TRACTOR POWER TRAIN
Media Number -SENR5317-02 Publication Date -01/12/2004 Date Updated -07/06/2005
SENR53170018
Final Drives
SMCS - 4050-016; 4050-011; 4050-012; 4050-015
Remove Final Drives
Start By:
a. separate track
NOTE: The final drive planet carriers can be removed in chassis. See topic Remove Final Drive
Planet Carriers (In Chassis).
1. Turn the final drive until drain plug (2) is on the bottom as shown. Remove drain plug (2) and
drain approximately 11.4 liter (3 U.S. gal.) of oil from the final drive.
1/16
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2021/7/25
https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis...

2. Remove cover (1) from the final drive. Remove the O-ring seal from the cover.
3. Remove the retainer from the sun gear.
4. Install tool (A), and remove the outer axle.
NOTE: Use caution whenever removing or installing the axle shaft. The hub seal can be cut by
the axle shaft splines and allow leakage of fluid. Always remove the shaft in a straight line.
Make sure that the short support of tooling (B) is on the bottom and the
long support is on the top when distance (X) is made.
5. Adjust the top bracket on tooling (B) so distance (X) is 38 mm (1.5 in). The lower mounting
bracket must be installed with the spacers outward as shown.
2/16
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6. Remove two bolts from the sprocket segments. Fasten a hoist, and install tooling (B) on the
final drive.
Do not remove two bolts (5) that hold the steering clutch and brake to
the frame.
7. Remove bolts (3) that hold the final drive and steering clutch and brake to the frame.
8. The weight of the final drive is 625 kg (1375 lb). Remove two bolts (4) that hold the fuel drive
and steering clutch and brake together.
9. Use tooling (B), and remove the final drive from the machine.
10. Remove the O-ring seal from either the face of the steering clutch or the final drive hub.
Install Final Drives
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1. Inspect the condition of O-ring seals, and replace if necessary.
2. Put the O-ring seal in position on the face of the steering clutch.
3. Fasten a hoist, and install tooling (A) on final drive (1). Make an adjustment to tooling (A) if
necessary to put the final drive in a level position. Put final drive (1) in position on the machine.
4. Install two bolts (3) that hold the final drive to the steering clutch and brake.
5. Install bolts (2) that hold the final drive and steering clutch and brake to the frame. Tighten
bolts (2) to a torque of 650 ± 50 N·m (480 ± 37 lb ft). Remove tooling (A).
6. Put SAE 30 oil on the threads of the segment bolts. Install the bolts and nuts with the head of
the bolts and washers against the final drive. Tighten the nuts to a torque of 300 ± 50 N·m (221 ±
37 lb ft). Tighten the nuts 1/3 turn more. Final torque must be a minimum of 570 N·m (420 lb ft).
7. Install tool (B) on the outer axle, and install outer axle (4) into the final drive. Make sure the
thrust button that goes between the inner and outer axles is installed into the end of the outer axle.
4/16
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8. Install retainer (6) into the sun gear.
9. Install O-ring seal (7) on cover (5), and install the cover on the final drive.
10. Rotate final drive so drain plug (8) is toward the bottom. Fill the final drive with oil to the
bottom of the fill plug hole. see the Operator And Maintenance Guide for the type and capacity of
oil that should be used.
End By:
a. connect track
Disassemble Final Drives
5/16
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Start By:
a. remove final drives
1. Install tooling (A) on the planet carrier. Fasten a hoist to tooling (A).
2. The weight of the planet carrier is 105 kg (230 lb). Remove bolts (3) that hold the planet carrier
to the hub. Remove planet carrier (2) from the hub.
3. Remove the six bolts that hold three plates (1). Remove the O-ring seal from each plate.
4. Use tooling (B) and a press, and remove three shafts (4) from the planet carrier.
5. Remove gears (5) from the planet carrier.
6. Remove bearing cones (6) from each side of gears (5).
6/16
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7. Use tooling (C), and remove the bearing cups from each side of gears (5).
NOTICE
There is a second sun gear (shown in Step 15) in the center of the
planet carrier that is free to fall if it stays with the planet carrier.
8. The weight of planet carrier (8) and sun gear (7) is 46 kg (101 lb). Install tooling (D) onto
planet carrier (8), and attach a hoist. Remove the planet carrier and sun gear (7) from the hub.
9. Turn the carrier and sun gear over, and remove spiral ring (9) from sun gear (7).
10. The weight of planet carrier (8) is 32 kg (71 lb). Use a hoist, and remove planet carrier (8)
from sun gear (7).
7/16
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11. Use a hammer and a punch, and drive roll pins (10) into the planet gear shafts.
12. Use a press, and remove the shafts. Remove the roll pins from the planet gear shafts.
13. Remove the three gears (11).
14. Remove the bearings (12) from each side of the three gears (11).
15. Remove ring (13) and sun gear (14) from the hub.
16. Remove the bolts and retainer (15). Use tooling (E) and a press, and remove ring (16) from
retainer (15) if either needs to be replaced.
8/16
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17. Use a magnet, and remove 15 pins (17) from the hub.
18. The weight of hub (18) and ring gear (19) as a unit is 73 kg (161 lb). Install tooling (F), and
attach a hoist. Remove hub (18) and ring gear (19) as a unit. Remove tooling (F).
19. Turn the hub and ring gear over, and remove retainer ring (20) from the ring gear.
20. Remove hub (18) from ring gear (19). The weight of hub (18) is 22 kg (48 lb).
9/16
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21. Install tooling (G) on hub (22) as shown.
NOTICE
Do not lift the hub high enough to make contact with the fitting on the
hydraulic cylinder [part of tooling (G)].
22. Use tooling (G), and loosen hub (22) from hub (23).
23. Remove tooling (G). Remove bearing cone (21) from the hub.
24. Install tooling (H) onto hub (22). The weight of hub (22) is 260 kg (572 lb).
25. Attach a hoist to tooling (H), and remove hub (22) from hub (23).
26. Turn hub (22) over, and remove Duo-Cone seal (25). Use a hammer and a punch, and remove
bearing cup (26).
27. Turn the hub over, and remove bearing cup (24) from the hub with a hammer and punch.
NOTE: If the Duo-Cone seals are to be used again, put identification marks on the seals so they
can be assembled and installed in their original position.
10/16
D7H & D7H LGP SERIES II TRACTOR / POWERSHIFT / 3XG05500-UP (MAC...
2021/7/25

28. Remove Duo-Cone seal (27) from hub (23).
NOTICE
Bearing cone (29) may be damaged if it is removed from hub (23).
29. Remove bearing cone (29) from hub (23) if it is necessary.
30. Remove lip-type seal (28) from the hub.
Assemble Final Drives
1. Use tooling (A), and install the lip-type seal in hub (1). Put clean oil on the lip of the seal.
2. Heat bearing cone (2) to a maximum temperature of 135°C (275°F). Install bearing cone (2) on
hub (1).
11/16
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NOTE: Before installing any of the Duo-Cone seals, see Installation Of The Duo-Cone Floating
Seals in this module.
3. Use tool (B), and install the Duo-Cone seal on hub (1) as shown.
4. Lower the temperature of bearing cups (3), and install them into hub (4).
5. Use tool (B), and install the Duo-Cone seal into hub (4).
6. Install tooling (C), and attach a hoist. Carefully put hub (4) in position on hub (1).
7. Heat bearing cone (6) to a maximum temperature of 135°C (275°F). Install bearing cone (6) on
the hub.
8. Put tool (D) in position on the bearing cone. Install retainer (5). Turn hub (4) while the bolts
that hold the retainer are tightened to a torque of 135 ± 15 N·m (100 ± 11 lb ft). Allow the bearing
cone to return to room temperature before the retainer and tool (D) are removed. Remove the
retainer and tool (D).
12/16
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9. Put hub (7) in position in gear (9). Install retainer ring (8).
10. Turn the hub (7) and gear (9) over, and install tooling (E). Attach a hoist to tooling (E), and
put the hub and gear (9) in position in hub (4).
11. Put 15 pins (10) in position in the hub. Hub (7) should be below the end of hub (1).
12. Use tooling (A) and a press, and install ring (11) in retainer (5).
13. Put retainer (5) in position on the hub, and install the
NOTICE
There must be metal to metal contact between hub (1) and retainer (5).
13/16
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14. Use a feeler gauge, and measure the distance between retainer (5) and pins (10). There must be
0.08 ± 0.05 mm (.003 ± .002 in) clearance between retainer (5) and pins (10).
15. Put the two bearings in position in each of the three gears (14).
16. Put gears (14) and the bearings in position in carrier (12).
17. Lower the temperature of shaft (13). Align hole (X) in shaft (13) with hole (X) in carrier (12).
Use a press, and install shaft (13). Install the roll pin into hole (X) to retain shaft (13).
18. Use a hoist, and lower carrier (12) into position on sun gear (15).
19. Install spiral ring (16).
20. Install sun gear (17) and ring (18).
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21. Install tooling (F), and attach a hoist.
22. Align the gears in planet carrier (12) with gear (9) and sun gear (17). Lower the planet carrier
into the final drive. Make sure sun gear (17) engages the planet carrier gears and ring (18) stays in
the correct position.
23. Lower the temperature of the two bearing cups, and install them into gears (21).
24. Put the two bearing cones and gears (21) into position in carrier (19).
25. Lower the temperature of shafts (20), and use a press to install them into carrier (19).
26. Turn carrier (19) over, and measure the distance that the shafts extend beyond the machined
surface of the carrier. The distance must be 0.08 ± 0.05 mm (.003 ± .002 in).
NOTICE
There must be a metal to metal contact between shafts (20) and plates
(22).
15/16
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27. Install the O-ring seals on plates (22). Put plates (22) in position on the shafts, and install bolts
(23).
28. Install tooling (G) to planet carrier (19), and attach a hoist.
29. Install O-ring seals (24) and (25). Align the drain hole in the planet carrier with the drain hole
in the hub as shown.
30. Put planet carrier (19) in position on the hub.
31. Install the bolts that hold the planet carrier to the hub. Tighten the bolts to a torque of 475 ± 50
N·m (350 ± 37 lb ft). Remove tooling (G).
End By:
a. install final drives
Copyright 1993 - 2021 Caterpillar Inc.
All Rights Reserved.
Private Network For SIS Licensees.
Sun Jul 25 20:34:07 UTC+0800 2021
16/16
2021/7/25

Shutdown SIS
Previous Screen
SENR53170019
Final Drives, Steering Clutches And Brakes
SMCS - 4050; 4100-011; 4100-012; 4100-029
Remove Final Drive, Steering Clutch And Brake
Start By:
a. separate track
1. Turn the final drive until drain plug (2) is on the bottom as shown. Remove drain plug (2) and
drain approximately 11.4 liter (3 U.S. gal.) of oil from the final drive.
2. Remove the three bolts and cover (1) from the final drive. Remove the O-ring seal from the
cover.
1/6
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3. Remove the retainer from the end of the axle. Install tooling (A), and remove the outer axle.
4. Use tooling (A), and remove the inner axle.
5. Adjust the lifting shackle on tooling (B) so distance (X) is 38 mm (1.5 in). The lower mounting
bracket should be installed so the spacers are out as shown.
6. Remove two bolts from the sprocket segments. Fasten a hoist, and install tooling (B) on the
final drive as shown.
2/6
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7. Remove bolts (3) that hold the final drive and steering clutch and brake to the frame.
NOTE: Do not remove bolts (4) that hold the final drive to the steering clutch and brake.
8. The weight of the final drive and steering clutch and brake assembly is 864 kg (1900 lb).
Remove two bolts (5) that hold the steering clutch and brake to the frame.
9. Remove final drive and steering clutch and brake (6) as a unit.
Install Final Drive, Steering Clutch and Brake
1. Inspect all O-rings for damage, and replace if necessary.
3/6
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2. Fasten a hoist, and install tooling (A) on the final drive. Make an adjustment to tooling (A), if
needed, to level the final drive and steering clutch and brake.
3. Put final drive, steering clutch and brake assembly (1) in position on the tractor.
4. Install two bolts (3) that hold the steering clutch and brake to the frame.
5. Install bolts (2) that hold the final drive and steering clutch and brake to the frame. Tighten 26
bolts (2) to a torque of 650 ± 50 N·m (480 ± 37 lb ft). Remove tooling (A).
6. Put SAE 30 oil on the threads of two segment bolts (4). Install the bolts and nuts with the head
of the bolts and washers against the final drive. Tighten the nuts to a torque of 300 ± 50 N·m (221
± 37 lb ft). Tighten the nuts 1/3 turn more. Final torque must be a minimum of 570 N·m (420 lb
ft).
7. Install tool (B) on the inner axle, and install the inner axle. Remove tool (B).
8. Install tool (B) on the outer axle, and install outer axle (5) into the final drive. Make sure the
thrust button that goes between the inner and outer axles is installed into the end of the outer axle.
9. Install retainer (7) into the sun gear.
10. Install O-ring seal (6) on cover (8), and install the cover on the final drive.
4/6
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11. Rotate the final drive so drain plug (9) is toward the bottom. Fill the final drive with oil to the
bottom of the fill plug hole. See the Operation And Maintenance Guide for the correct oil and
capacity to be used.
End By:
a. connect track
Separate And Connect Final Drives, Steering Clutches And
Brake
Start By:
a. remove final drive, steering clutch and brake
1. Remove four O-ring seals (1) and (2) from the face of the steering clutch and brake.
2. Remove two bolts (3) from the steering clutch and brake.
5/6
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3. The weight of the steering clutch and brake assembly is 240 kg (528 lb). Install tooling (A), and
attach a hoist as shown.
4. Remove the steering clutch and brake from the final drive.
5. Turn the steering clutch and brake over. Remove O-ring seal (4).
NOTE: The following steps are for connection of the final drive and steering clutch and brake.
6. Inspect the O-ring seals for damage, and replace if necessary. Put clean oil on the O-ring seals.
7. Put O-ring seal (4) in position on the steering clutch and brake.
8. Install tooling (A), and attach a hoist. Put the steering clutch and brake in position on the final
drive.
9. Install two bolts (3) that hold the steering clutch and brake to the final drive.
10. Put four O-ring seals (1) and (2) in position on the steering clutch and brake.
End By:
a. install final drive and steering clutch and brake
Copyright 1993 - 2021 Caterpillar Inc.
All Rights Reserved.
Private Network For SIS Licensees.
Sun Jul 25 20:35:03 UTC+0800 2021
6/6
2021/7/25

Shutdown SIS
Previous Screen
SENR53170020
Steering Clutch And Brake
SMCS - 4100-016; 4100-015
Disassemble Steering Clutch And Brake
Start By:
a. separate final drive from steering clutch and brake
The brake group contains springs that are under compression. To
prevent possible personal injury from flying parts, the brake group
must be disassembled exactly as the following steps describe. Do not
remove bolts (2) until after bolts (3) are slowly loosened and removed.
1/13
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1. Remove the four bolts and plate (1) from the steering clutch and brake assembly. Do not
remove bolts (2) at this time.
2. Install tooling (A), and attach a hoist. The weight of brake group (4) is 159 kg (350 lb).
Remove brake group (4) from steering clutch group (5).
To prevent possible personal injury from flying parts, make sure bolts
(2) are tight before bolts (3) are removed. Bolts (3) are long enough to
release the spring pressure behind retainer (6) as long as bolts (3) are
installed.
3. Turn brake group (4) over. Evenly loosen 10 bolts (3) to release the spring pressure behind
retainer (6). Remove bolts (3) and retainer (6).
4. Remove four discs (7) and the three plates from brake housing (4).
5. Remove O-ring seal (8) from the brake group.
2/13
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6. Turn the brake group over, and install tooling (A). The weight of brake housing (4) is 73 kg
(161 lb). Remove seven bolts (2). Use a soft hammer, and remove brake housing (4) from the
retainer.
7. Remove ring (9) and spring (11) from retainer (10).
8. Remove ring (12) and piston (13) from the retainer.
9. Remove the seal ring from the inner diameter of piston (13).
10. Remove seal ring (15) from retainer (10).
11. Remove two ball bearings (14), one from each side of retainer (10).
3/13
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12. Remove two O-ring seals (16) from the brake housing.
13. The weight of the steering clutch group is 159 kg (350 lb). Remove four bolts (18) and hub
(17).
14. Use tool (B), and remove retaining ring (21).
15. Remove plate (20) and bearing (19) from the steering clutch group.
16. Remove the 10 bolts and the retainer.
17. Remove five discs (22) and the four plates from housing (23).
4/13
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18. Install tooling (C) into the piston. The weight of piston (24) is 19.1 kg (42 lb). Remove piston
(24) from housing (23).
19. Remove the seal ring from the inner diameter of piston (24).
20. Install tooling (A), and attach a hoist. The weight of housing (23) is 33.6 kg (74 lb). The
weight of hub assembly (25) is 21 kg (46 lb). Raise the housing and hub assembly together, and
remove the wood blocks.
21. Lower housing (23), and remove hub assembly (25).
22. Turn housing (23) over, and remove ring (26).
5/13
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23. Use tool (B), and remove retaining ring (27) from hub assembly (25).
24. Remove three seal rings (28) from the hub assembly.
25. Remove O-ring seal (30) from hub assembly (25).
26. Use tooling (D) and a press, and remove plate (29) from the hub assembly.
Assemble Steering Clutches And Brakes
6/13
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1. Lower the temperature of two bearings (1). Install two bearings (1), one in each side of retainer
(2).
2. Install seal ring (3) on retainer (2).
3. Install seal ring (5) in piston (4).
4. Put piston (4) in position on retainer (2).
5. Put ring (6) in position on piston (4).
6. Put spring (7) in position on ring (6) and piston (4). Spring (7) goes with the concave side up.
7. Put ring (8) in position on spring (7).
8. Install two O-ring seals (9) on brake housing (10).
7/13
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9. Install tooling (A) onto brake housing (10). Attach a hoist, and put the brake housing in position
on retainer (2), and install the seven bolts that hold it.
NOTE: A disc assembly has friction material on both sides. A plate is a smooth stud plate and
does not have friction material on either side. Put clean oil on all disc assemblies and plates before
assembly.
10. Turn the brake housing over. Put steering clutch hub (11) in position to align the discs. Install
four discs (12) and the three plates into the housing. Alternate installation of the discs and plates.
Start with a disc and end with a disc.
11. Put retainer (14) in position on the discs and brake housing.
NOTICE
Make sure the disc assemblies do not get between retainer (14) and the
brake housing when the bolts are tightened.
12. Install bolts (13) and snug evenly, but do not tighten. Bolts (13) put the spring under
compression. Bolts (13) should not be tightened now so the brake discs can be aligned with the
steering clutch housing splines in Step 28.
8/13
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13. Remove steering clutch hub (11) from the brake housing.
14. Make sure the smooth side of plate (16) is toward the splines on hub assembly (15). Use
tooling (B) and a press, and install plate (16) onto hub assembly (15).
15. Install seal ring (17) onto plate (16).
16. Use tool (C), and install retaining ring (18).
Figure 1. Correct Method To Make (Non-Metal) New Seal Rings Ready For Installation.
9/13
2021/7/25

Suggest:
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Please download this document
first, and then click the above link
to download the complete manual.
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Figure 2. Wrong Method To Make (Non-Metal) New Seal Rings Ready For Installation.
NOTICE
New seal rings must be preloaded before they are installed to prevent
them from being damaged or broken when the clutch housing is
installed. There is a correct method to preload new seal rings prior to
installation. Place your hands on each end of the seal ring, and pull
(wind) the ends several inches past each other or until they almost
make contact. See Figure 1. Use care to keep the ring shaped like a
circle. This will make an even bend (or ring "set") all around the ring.
When the seal ring is in the groove of carrier (24), the ends must butt
together lightly. Do not bend the seal ring as shown in Figure 2. This
does not make an even bend all the way around the ring.
Do not attempt to use this method to preload a used seal ring. Also, do
not use this procedure for cast iron seal rings. This will cause used or
cast iron seal rings to break.
17. Install three seal rings (19) onto the hub assembly.
18. Install ring (20) into steering clutch housing (21).
10/13
2021/7/25

Caterpillar Cat D7H TRACK-TYPE TRACTOR (Prefix 3XG) Service Repair Manual Instant Download.pdf

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Caterpillar Cat D7H TRACK-TYPE TRACTOR (Prefix 3XG) Service Repair Manual Instant Download.pdf