Service Repair Manual
Models
120H Motor Grader
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Product: MOTOR GRADER
Model: 120H MOTOR GRADER CAF
Configuration: 120H Motor Grader CAF00001-UP (MACHINE) POWERED BY 3126B Engine
Disassembly and Assembly
120H and 135H Motor Graders Machine Systems
Media Number -RENR4164-01
Publication Date -01/04/2005
Date Updated -30/04/2005
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Piston Pump (Hydraulic and Steering) - Assemble
SMCS - 4306-016; 5070-016
Assembly Procedure
Table 1
Required Tools
Tool Part Number
Part Description
Qty
B
1P-1861
Retaining Ring Pliers
1
D
1P-0510
Driver Group
1
E
8T-5096
Dial Indicator Group
1
F
-
Loctite LB 8632 Silicone Lubricant (1)
-
-
Loctite LB 8104 Silicone Lubricant (2)
-
-
Loctite LB 8801 Silicone Lubricant (3)
-
-
Loctite LB Superlube (4)
-
G
-
Loctite 243
-
(1) North America
(2) EAME
(3) Asia Pacific Division
(4) South America
Note: The axial end play must be adjusted if the swashplate, the swashplate bearings, the shaft,
the shaft bearings, the head, or the housing has been replaced.
1. During the assembly of the piston pump, check the condition of all the O-ring seals and the
lip seals that are used in the pump. If any of these seals are damaged, use new parts for
replacement.
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Illustration 1
g00991054
2. Lower the temperature of bearing cup (40). Use Tooling (D) to install bearing cup (40) in
head (31). Install bearing cup (40) until the bearing cup is seated.
Illustration 2
g00990468
Illustration 3
g00990696
3. Lower the temperature of bearing cup (66). Use Tooling (D) to install bearing cup (66) in
housing (26). Install bearing cup (66) until the bearing cup is seated.
4. Install bearing (58) in housing (26).
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5. Inst