Caterpillar Cat 953C TRACK LOADER (Prefix BBX) Service Repair Manual (BBX00001-UP).pdf

Service Repair Manual
Models
953C TRACK LOADER

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Product: TRACK LOADER
Model: 953C TRACK LOADER BBX
Configuration: 953C TRACK-TYPE LOADER BBX00001-UP (MACHINE) POWERED BY 3126B Engine
Disassembly and Assembly
953C Track-Type Loader Power Train
Media Number -RENR5648-05 Publication Date -01/04/2010 Date Updated -28/04/2010
i02088344
Track Carrier Roller - Remove
SMCS - 4154-011
Removal Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A 8T-5255 Hydraulic Jack 1
B 76.2 mm (3.0 inch) diameter by
63.5 mm (2.50 inch) long Pin
1
C 183-4797 Lift Fork 1
Illustration 1 g00547196
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953C TRACK-TYPE LOADER BBX00001-UP (MACHINE) POWERED BY 3126B ...
2019/8/30
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1. Remove guard (1) and cover (2) from the track roller frame.
Personal injury can result from grease under high pressure.
The adjuster cylinder for the track is under high hydraulic pressure.
Grease under high pressure can cause injury.
Do not visually inspect the adjuster to see if grease is released when the
valve is opened. Check the rod to see that it moves to the rear into the
front support on the track roller frame.
2. Loosen the track in the following manner.
a. Turn valve (3) for one turn counterclockwise in order to allow the release of grease
from the vent. If the track does not loosen start the machine and move the machine
forward and backward. Refer to Step 2.b if the track does not loosen.
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b. Install Tooling (B) between the track and the sprocket segment, as shown. The pin
must make contact with a track bushing. Move the machine rearward so that the track
will be pushed up by the pin. The pin will tension the track. The front idler and the
track adjuster will be pushed against the force of the recoil spring. Refer to Step C if
the track does not loosen.
c. Move the machine forward so Tooling (B) does not put tension on the track. Loosen
bolts (4) to a distance of 6.4 mm (0.25 inch). Move the machine to the rear so that
Tooling (B) will push up the track. Grease will be forced through the secondary bleed
hole. This will allow the track to loosen. After the track is loosened, move the
machine forward and remove Tooling (B) from the track. Tighten bolts (4) in the
track adjuster. Tighten valve (3) in the track adjuster to a torque of 70 ± 15 N·m (52.0
± 11.0 lb ft).
Note: Do not overtighten valve (3). This may cause damage to the valve seat.
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3. Install Tooling (A) between the track and the track roller frame. Use Tooling (A) to lift the
track off carrier roller (5) .
4. Remove bolts (6) that hold track carrier roller (5) in the bracket. Use Tooling (C) in order to
remove track carrier roller (5). The weight of track carrier roller (5) is approximately 27 kg
(60 lb).
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Fri Aug 30 12:19:25 UTC+0800 2019
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i02088367
Track Carrier Roller - Install
SMCS - 4154-012
Installation Procedure
Table 1
Required Tools
Tool Part Number Description Qty
A 8T-5255 Hydraulic Jack 1
C 183-4797 Lift Fork 1
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1. Position track carrier roller (5) in the support bracket. Align dowels (7) with the holes in the
support bracket. The weight of track carrier roller (5) is approximately 27 kg (60 lb).
2. Install the washers and bolts (6) that hold track carrier roller (5) in the bracket, but do not
tighten.
3. Lower the track onto the track carrier roller (5). Remove Tooling (A). Move track carrier
roller (5) in and out, as needed. This is necessary in order to properly align the track carrier
roller with the track. Tighten bolts (6) .
4. Adjust the tracks. Refer to Operation and Maintenance Manual, "Track - Adjust".
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5. Install guard (1) and cover (2) onto the track roller frame.
Fri Aug 30 12:20:10 UTC+0800 2019
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i02088341
Track Roller - Remove
SMCS - 4180-011
Removal Procedure
Table 1
Required Tools
A 5P-6215 Jack Stand 1
B FT-1310 Track Roller Lifting Fork 1
1. Loosen the tracks. Refer to Operation and Maintenance Manual, "Track - Adjust".
Note: The guards (1) near the sprocket must be removed in order to remove the track roller
(2). The other track rollers can be removed with guards (1) on the machine.
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2. Remove the bolts and guard (1) .
3. Lift the machine until the bottom of the track roller is at least 38 mm (1.0 inch) above the
track rail. Install Tooling (A) under the front and rear of the machine.
4. Remove the four bolts from track roller (2). Loosen the track. Track roller (2) will lower
from the track frame as the track is loosened. Use a suitable lifting device and Tooling (B)
to remove track roller (2). The weight of the track roller is 50 kg (109 lb).
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Fri Aug 30 12:20:55 UTC+0800 2019
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i02023638
Track Roller - Install
SMCS - 4180-012
Table 1
Required Tools
B FT-1310 Track Roller Lifting Fork 1
NOTICE
Clean all dirt and paint off the contact surfaces of the track roller and
track roller frame. Dirt or paint can cause the bolts that hold the track
rollers in place to loosen.
Note: The roller placement from the front of the machine is in the following manner. No. 1
Single Flange, No. 2 Double Flange, No. 3 Single Flange, No. 4 Single Flange, No. 5
Double Flange and No. 6 Single Flange The oil holes must face out when you install the
rollers on the track roller frame.
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1. Position track roller (2) on the track roller frame with Tooling (B). Tighten the track in
order to hold roller (2) in position.
2. Install bolts (3). Tighten bolts (3) to a torque of 270 ± 40 N·m (200 ± 30 lb ft).
3. Install guards (1) for track roller (2) .
4. Adjust the tracks. Refer to Operation and Maintenance Manual, "Track - Adjust".
Fri Aug 30 12:21:40 UTC+0800 2019
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i02088351
Track - Separate
SMCS - 4170-076
Removal Procedure
Table 1
Required Tools
B 1P-3532 Track Block Assembly 1
C 76.2 mm (3 inch) by 63.5 mm (2.5 inch) Pin 1
Start By:
a. Loosen the tracks. Refer to Operation and Maintenance Manual, "Track - Adjust".
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1. Remove cover (2) and plate (1).
2. Loosen the tracks in the following manner.
a. Turn valve (3) for one turn counterclockwise in order to release grease from the vent
hole. If the track does not loosen move the machine forward and backward. If the
track does not loosen refer to Step 2.b.
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b. Install Tooling (C) between the track and the sprocket segment. Tooling (C) must
make contact with a track bushing. Move the machine backward so that the track will
be pushed up by Tooling (C). This will force tension on the track. This will press the
front idler and the track adjuster against the recoil spring. If the track does not loosen,
refer to Step 2.c.
c. Move the machine forward so that Tooling (C) does not put tension on the track.
Loosen bolts (5) to a maximum of 6.4 mm (0.25 inch). Move the machine to the rear
so that Tooling (C) will push up the track. Grease will be forced from the track
adjuster from the secondary bleed hole. This will allow the track to loosen. After the
track is loosened, move the machine forward and remove Tooling (C) from the track.
Tighten bolts (5) in the track adjuster. Tighten valve (3) in the track adjuster to a
torque of 70 ± 15 N·m (52.0 ± 11.0 lb ft).
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Note: Tooling (A) is not necessary if complete replacement of the track is made. Make a
separation of the track. Put the new track directly in front of the old track. Start the machine.
Drive the machine off the old track and onto the new track. If repair of the old track is
necessary, install Tooling (A).
3. Lift the machine and install Tooling (A) under the front and rear of the machine.
4. Move the track until the master shoe is just below a horizontal line that would go through
the center of the sprocket. Position Tooling (B) under the track shoe that is below the master
link ,as shown. Move the track backward until the track is riding on Tooling (B).
5. Remove bolts (6) and master shoe (7). Separate the master links.
Note: The bolt holes in the master shoe are positioned differently than the holes in the other
track shoes.
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6. Raise the track. Lower the master link off Tooling (B) with a lift truck. Remove Tooling
(B). Use a suitable lifting device or a lift truck in order to lower the track and the master link
to the floor.
Personal injury can result from the track coming off of the roller frame.
The track can move off the track roller frame very quickly when a
separation of the track is made.
Keep away from the front of the machine when the track is removed
from the track roller frame.
7. Move the track forward slowly until the track is off the front of the track roller frame.
Fri Aug 30 12:22:25 UTC+0800 2019
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i07459975
Track - Connect
SMCS - 4170-077
Table 1
Required Tools
A 422-8733 Jack Stand Gp 4
B 1P-3532 Track Block As 1
C 1P-3533 Carrier Bar 1
D 1P-3545 Track Chain Coupler 1
E - Loctite Graphite-50 -
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1. Install Tooling (D) in the last track shoe which is near the sprocket.
2. Put Tooling (D) on the sprocket segment, as shown.
3. Start the machine. Move the sprocket forward until the track is pulled up on the sprocket.
The end of the track will be forward of a vertical line through the center of the sprocket.
Remove Tooling (D).
4. Install Tooling (C) between the last track shoe and the bushing, as shown. Slowly Move the
sprocket in a forward direction. Use Tooling (C) as a guide to position the track over the
carrier roller and the front idler.
5. Install Tooling (D) in both last track shoes and connect the hook and the chain together.
NOTICE
Position the ends of the master link so that it can be pulled under the
track roller frame without being damaged.
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6. Start the machine. Move the sprocket forward until the master link is just below a horizontal
line through the center of the sprocket.
7. Put Tooling (B) under the last track shoe at the lower end of the track, as shown. Move the
sprocket backward until the two links can be assembled. Remove Tooling (D).
8. Apply Tooling (E) to the threads, the body, and the washer face of bolts (1) for the master
link. Install master shoe (2) in position on the master links. Install bolts (1). Tighten bolts
(1) to a torque of 400 ± 70 N·m (295 ± 52 lb ft). Then, tighten bolts (1) for an extra 120 ± 5
degrees.
End By:
a. Adjust the tracks. Refer to Operation and Maintenance Manual, "Track - Adjust".
Fri Aug 30 12:23:10 UTC+0800 2019
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i01614803
Track - Adjust
SMCS - 4170-025
Adjustment Procedure
Note: Before you attempt to adjust the track move the machine. Move the machine forward.
Allow the machine to SLOWLY come to a stop.
1. Remove cover (1) from the track roller frame.
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2. Use a grease gun to push grease in the track adjuster and move the front idler until the track
is in the full tight position.
Note: The full tight position has no slack on the track between the carrier roller and the
idler. Do not attempt to extend the idler further.
Note: Dimension (X) is determined by measuring from the face of the bulkhead to the yoke
pin centerline.
3. Continue to step 5 if dimension (X) is less than 134 mm (5.3 inch).
4. If dimension (X) is greater than 134 mm (5.3 inch) the front idler must be moved forward.
Position the front idler in the next set of mounting holes. Proceed in the following manner.
a. Loosen the track. Refer to Disassembly and Assembly, "Track Carrier Roller -
Remove" for further information.
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b. Put marks on the inside guards, outside guards (4), and the track roller frame.
Distance (Y) between the two marks should be approximately 27.0 mm (1.06 inch).
Remove bolts (2) and (3) from guards (4).
c. Use a pry bar to move guards (4) forward to the next set of holes. The holes will be in
alignment when the rear marks on guards (4) are in alignment with the front marks on
the roller frame. Use the track adjuster to push the yoke forward, if necessary.
d. Install the bolts that hold the guards to the track roller frame and rock guards. Tighten
the bolts to the track roller frame to a torque of 200 ± 25 N·m (148.0 ± 18.0 lb ft).
Note: The full tight position has no slack on the track between the carrier roller and
the idler. Do not attempt to extend the idler further.
5. Use a grease gun in order to push grease in the track adjuster. Push grease until the front
idler is in the full tight position.
6. Put a straight edge against the bulkhead and the rod, as shown. Put a mark (A) on the rod at
this position.
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7. Put a second mark (B) on the rod. Mark (B) 10.0 mm (0.40 inch) in front of the first mark.
8. Open the valve for the track adjuster. One turn. The idler should move back. This will cause
mark (B) to be behind the front side of the straight edge. When the idler will not retract you
must move the machine. Move the machine backward and move forward . This will help the
idler move to the original position. Close the valve for the track adjuster.
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9. Position the straightedge against the bulkhead and across the rod. Use the grease gun to
push grease in the track adjuster. Move the idler forward until the straightedge is aligned
with mark (B) on the rod.
10. Install cover (1) over the track adjuster.
Note: Some machines may be equipped with full guards for the idler. Adjustments to the
track can be made without the removal of the guards. Use the following steps in order to
make adjustment to the tracks on machines with full guards.
Note: Point (A) is the forward edge of outer guard (5). Point (C) is the forward edge of
inner guard (6).
11. Use a grease gun in order to push grease in the track adjuster. This will move the front idler
until the idler is in the full tight position.
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Note: The full tight position has no slack on the track between the carrier roller and the
idler. Do not attempt to extend the idler further.
12. Measure the distance that is between point (A) and point (C). Continue to step 14 if the
distance between point (A) and point (C) is less than 75.0 mm (3.00 inch).
13. When the distance between point (A) and point (C) is greater than 75.0 mm (3.00 inch) the
idler must be moved forward to the next set of holes. Use the procedures in Steps 4.a
through Step 5 to move the idler forward. After the idler has been moved forward, continue
to Step 14.
14. Use a straightedge to put a mark on guard (6) at point (A).
15. Put a second mark (B) on guard (6), as shown. Mark (B) should be 10.0 mm (0.40 inch) in
front of the first mark at point (A).
16. Open the valve for the track adjuster. The idler should move back to position (B). Point (B)
is located behind point (A) and beneath guard (5). If the idler does not move back run the
machine backward and move forward. This will help the idler move to the original position.
Close the valve for the track adjuster.
17. Use the grease gun to push grease in the track adjuster. Move the idler forward until mark
(B) is even with point (A) at the edge of guard (5).
18. Install cover (1) over the track adjuster.
Fri Aug 30 12:23:55 UTC+0800 2019
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i02039605
Front Idler and Yoke - Remove
SMCS - 4159-011
Removal Procedure
Start By:
a. Separate the tracks. Refer to Disassembly and Assembly, "Track Carrier Roller - Remove".
1. Attach a suitable lifting device to both sides of idler (2).
2. Remove three bolts (3) from each side of idler (2).
3. Remove the retaining bolt and pin (1).
4. Remove idler (2) and the yoke. The weight of the idler and yoke is approximately 220 kg
(486 lb).
Fri Aug 30 12:24:40 UTC+0800 2019
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Caterpillar Cat 953C TRACK LOADER (Prefix BBX) Service Repair Manual (BBX00001-UP).pdf

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