TUBE 5K7073 - Caterpillar

Note: The allowable clearance between the shaft and the bearing is 0.046 0.013 mm (0.0018 0.0005 inch).
Table 3
Maximum Surface Texture
Description Surface Texture
Micrometer Microinch
Rocker Arm Shaft 0.125 5
Bearing 0.80 32 Disassembly and Assembly of the Rocker Shaft
Disassembly
Table 4
Required Tools
Tool Part Number Part Description Qty
A 1P-0510 Driver Group 1
Illustration 5 g03684961
(1) Rocker arm shaft assembly
(2) Intake rocker arm
(3) Exhaust rocker arm
(8) Spring
(9) Washer
(10) Bracket
(11) Washer
(12) Ring
(13) Washer
Illustration 6 g03690778
Exploded view of the rocker arm assembly
(4) Nut
(5) Adjusting screw
(6) Seat
(7) BearingAssembly
Table 5
Required Tools
Tool Part Number Part Description Qty
A 1P-0510 Driver Group 1
Illustration 7 g03690779
Oil passages within the rocker arm
(A) Rocker arm oil passage
(B) Bearing oil passage
Illustration 8 g03690780
Driver tooling pressing out the bearing
1P-0510 Driver Gp pressing out bearing (7).
Note: Make sure that the bores of the rocker arm and the sleeve bearing are thoroughly clean.
The sleeve bearing and the rocker arm have oil supply holes. The holes must be aligned when the bearing is installed in the rocker arm. Align the joint of the bearing toward the top of the rocker arm. Align the oil hole in the bearing with the oil hole in the rocker arm. Use 1P-0510 Driver Group to install the bearing (7) into the rocker arm.
It is important to machine the bearing (7) to the proper ID once it is pressed in. Machine the rocker bearing (7) to a final bore size of 18.48 0.013 mm (0.727 0.0005 inch). It must meet the surface texture as listed in table 3.
Illustration 9 g03685042
(1) Rocker arm shaft assembly
(2) Intake rocker arm
(3) Exhaust rocker arm
(8) Spring
(9) Washer
(10) Bracket
(11) Washer
(12) Ring
(13) Washer
Illustration 10 g03685039
(5) Adjusting screw
(6) SeatValve Mechanism Group
Illustration 11 g03685057
(1) Rocker arm shaft assembly
(2) Intake rocker arm
(3) Exhaust rocker arm
(6) SeatRocker Arm Adjustment Screw
Illustration 12 g03685064
(5) Wear surface for the adjustment screwInspect the wear surface for the adjustment screw (5) for wear.