Caterpillar cat 16 m3 motor grader (prefix n9y) service repair manual (n9y00001 and up)

Service Repair Manual
Models
16M3 Motor Grader

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Product: MOTOR GRADER
Model: 16M3 MOTOR GRADER N9Y
Configuration: 16M Series 3 Motor Grader N9Y00001-UP (MACHINE) POWERED BY C13 Engine
Disassembly and Assembly
16M Series 3 and 18M Series 3 Motor Graders Machine Systems
Media Number -UENR6762-02 Publication Date -01/09/2015 Date Updated -07/08/2018
i06147991
Gerotor Motor (Circle Drive) - Disassemble
SMCS - 5082-015; 5206-015
Disassembly Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A 1P-0074 Slide Hammer Puller Gp 1
Start By:
a. Remove the gerotor motor.
Illustration 1 g00635481
Note: Cleanliness is an important factor. Make sure that the component is clean and free of foreign
material prior to the disassembly procedure.
1. Remove bolts (1) and cover (2) from the motor assembly. Remove the O-ring seal from cover (2).
1/616M Series 3 Motor Grader N9Y00001-UP (MACHINE) POWERED BY C13 Engine...
2020/4/20https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis...

2. Remove outer cover plate (3) and inner plate (4) from the motor assembly.
3. Remove seal (5) from inner plate (4).
4. Remove manifold (6) from the motor assembly. Remove the O-ring seals that are on both sides of
manifold (6).

5. Remove outer rotor (7) with the O-ring seal (not shown). Remove the O-ring seal from outer rotor
(7).
6. Remove pins (8) and inner rotor (9) from the motor assembly.
7. Remove spacer (10) from the motor assembly.
8. Remove link (11) and bearing (12) from the motor assembly.

9. Remove shaft (16). If the gerotor motor (circle drive) is equipped with needle bearing (13), use
Tooling (A) (not shown) in order to remove needle bearing (13). Remove two races (15) and bearing
(14) from the motor assembly.

10. Remove lip seal (17). Use Tooling (A) in order to remove bearing (18) from the motor assembly.
11. Remove backup ring (19) and the shim from the motor assembly. Remove lip seal (20). Remove O-
ring seal (21) from the motor assembly.

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i06147992
Gerotor Motor (Circle Drive) - Assemble
SMCS - 5082-016; 5206-016
Assembly Procedure
Table 1
Required Tools
A 1P-0510 Driver Gp 1
1. Make sure that all of the components of the gerotor motor are clean prior to assembly. During the
assembly, check the condition of all of the O-ring seals that are used in the motor. If any of the seals
are damaged, use new parts for replacement.

2. Install bearing (18). Use a suitable press in order to press bearing (18) to a depth of 7.62 mm
(0.300 inch) below Surface (X).
3. Install lip seal (17).
4. Install backup ring (19) and the shim to the motor assembly.
5. Install lip seal (20) to the motor assembly.
6. If equipped, install the needle bearing (13) (not shown). Press the needle bearing to a depth of
2.92 mm (0.115 inch) below Surface (Z). Install O-ring seal (21) to the motor assembly.

7. Position the motor assembly so that Face (Y) is facing upward. Install two races (15) and bearing
(14) to shaft (16), as shown.
8. Install shaft (16) to the motor assembly.
9. Install link (11) and bearing (12) to the motor assembly.
10. Install spacer (10) and inner rotor (9) to the motor assembly.
11. Install the O-ring seal in outer rotor (7). Install pins (8) and outer rotor (7) to the motor assembly.
12. Install the O-ring seals on both sides of manifold (6). Install manifold (6) to the motor assembly.

13. Install a new ring (5) to inner plate (4).
Note: Ring (5) is cone-shaped. The cone fits into the groove of inner plate (4).
14. Install inner plate (4). The seal ring should face the outer cap. Install outer plate (3) to the motor
assembly.
15. Install cap (2) and bolts (1) to the motor assembly.
Note: Refer to Specifications, "Gerotor Motor (Circle Drive)" for the correct torque specifications.
End By:

a. Install the gerotor motor.
Copyright 1993 - 2020 Caterpillar Inc.
All Rights Reserved.
Private Network For SIS Licensees.
Mon Apr 20 23:59:10 UTC+0800 2020

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i06147735
Circle Drive - Remove and Install
SMCS - 5207-010
Removal Procedure
Table 1
Required Tools
A
8S-7630 Stand 1
8S-7621 Tube 1
8S-7615 Pin 1
8S-8048 Saddle 1
B 138-7574 Link Bracket 2
Start By:
a. Remove the gerotor motor. Refer to Disassembly and Assembly, "Gerotor Motor (Circle
Drive) - Remove".
NOTICE
Keep all parts clean from contaminants.
Contaminants may cause rapid wear and shortened component life.

NOTICE
Care must be taken to ensure that fluids are contained during
performance of inspection, maintenance, testing, adjusting, and repair
of the product. Be prepared to collect the fluid with suitable containers
before opening any compartment or disassembling any component
containing fluids.
Refer to Special Publication, NENG2500, "Dealer Service Tool
Catalog" for tools and supplies suitable to collect and contain fluids on
Cat®
products.
Dispose of all fluids according to local regulations and mandates.
1. Use Tooling (A) in order to support circle (1). The weight of circle (1) is approximately
1179 kg (2600 lb).
2. Remove bolts (2) and plate (3).

3. Remove shims (4).
Note: Note the quantity of shims for installation purposes.
4. Remove plates (5) and wear strips (6).
5. Repeat Step 2 through Step 4 for the remaining shims.

6. Loosen nuts (7) and bolts (8). Remove bolts (9) in order to remove shoe (10), wear strip
(11), and plate (12). Repeat this step for the remaining shoes.
7. Ensure that all hydraulic lines are secure and plugged. Start the engine and run the engine.
Use the system hydraulics in order to raise the drawbar 6.35 mm (0.25 inch). Move the
machine forward by approximately 152 mm (6 inch). This step provides the clearance that is
necessary to remove the circle drive.
8. Stop the engine and release system pressure.
9. Disconnect grease hose assembly (13).
10. Remove plug (14). Drain the hydraulic oil.
11. Remove nuts (15).
12. Remove bolts (16). Use Tooling (B) and a suitable lifting device in order to remove circle
drive (17). The weight of circle drive (17) is approximately 204 kg (450 lb). Remove
adapter plate (18).
Installation Procedure
Table 2

Required Tools
A
8S-7630 Stand 1
8S-7621 Tube 1
8S-7615 Pin 1
8S-8048 Saddle 1
B 138-7574 Link Bracket 2
NOTICE
Keep all parts clean from contaminants.
Contaminants may cause rapid wear and shortened component life.
1. Install adapter plate (18). Use Tooling (B) and a suitable lifting device in order to install
circle drive (17). The weight of circle drive (17) is approximately 204 kg (450 lb). Install
bolts (16). Tighten bolts (16 ) to a torque of 850 ± 25 N·m (627 ± 18 lb ft).

2. Install nuts (15). Tighten nuts (15) to a torque of 850 ± 25 N·m (627 ± 18 lb ft). Install plug
(14). Connect grease hose assembly (13).
3. Ensure that all hydraulic lines are secure and plugged. Start the engine and run the engine.
Move the machine forward until the gear of the circle is in contact with the pinion of the
circle drive. Use the system hydraulics to lower the drawbar onto the circle.
4. Stop the engine and release system pressure.
5. Install plate (12), wear strip (11), and shoe (10). Install bolts (9). Tighten bolts (8) and nuts
(7). Repeat this step for the remaining shoes.

6. Install wear strips (6) and plates (5).
7. Install shims (4).
8. Install plate (3) and bolts (2).
9. Repeat Step 6 through Step 8 for the remaining shims.
10. Refer to Operation and Maintenance Manual, "Circle Clearances - Check/Adjust" in order to
set the clearances for the circle.

11. Remove Tooling (A) from circle (1).
End By:
a. Install the gerotor motor. Refer to Disassembly and Assembly, "Gerotor Motor (Circle
Drive) - Install". Fill the circle drive with final drive and axle oil.
Copyright 1993 - 2020 Caterpillar Inc.
All Rights Reserved.
Private Network For SIS Licensees.
Tue Apr 21 00:00:05 UTC+0800 2020

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i06147739
Circle Drive - Disassemble
SMCS - 5207-015
Disassembly Procedure
Table 1
Required Tools
A 8H-0663 Bearing Puller Gp 1
B 1P-1836 Bearing Puller Gp 1
Start By:
a. Remove the circle drive. Refer to Disassembly and Assembly, "Circle Drive - Remove".
Note: Cleanliness is an important factor. Before you begin the disassembly procedure, the exterior
of the components should be thoroughly cleaned. This will help to prevent dirt from entering the
internal mechanism. Precision components can be damaged by contaminants or by dirt. Perform
disassembly procedures on a clean work surface. Keep components covered and protected at all
times.

1. Remove nuts (1) from housing (2).
2. Remove adapter (3), O-ring seal (4), bearing cup (5), and shims (6).
3. Remove fitting (9).
4. Remove bolts (10).
5. Remove cover (8) and remove gasket (7).

6. Remove bolts (12) and remove cover (11).
7. Remove O-ring seal (13) from cover (11).
8. Remove bolts (17).
9. Remove plate (16), shims (15), and spacer (14).

10. Remove spring disc (19) and remove spacer (18).
11. Remove disks (21) and plates (20).
12. Reposition the circle drive.
13. Remove spacer (22) and remove worm gear (23).

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14. Remove worm (24).
15. Use Tooling (A) and a suitable press in order to remove bearings (25) from worm (24).

16. Remove bearing cup (26).
17. Remove bolts (29), cover (28), and gasket (27).
18. Remove bolts (31) and remove cage assembly (30).
19. Remove Duo-cone seal gp (33) and sleeve bearing (32) from cage assembly (30).

20. Mark the position of circle drive pinion (34) and collar (35).
21. Bend the locking tab on nut lock (37) away from nut (38).
22. Remove nut (38), nut lock (37), spacer (36), collar (35), circle drive pinion (34), and the
thrust washer (not shown).
23. Remove both Duo-cone seal gp (39) from circle drive pinion (34).

Caterpillar cat 16 m3 motor grader (prefix n9y) service repair manual (n9y00001 and up)

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