KNOB 8T4229 - Caterpillar

Disassembly Procedure
Table 1
Required Tools
Tool Part Number Part Description Qty
A 390-1150 Injection Pump Gear Puller 1
154-6360 Bolt 1
B 8H-0663 Bearing Puller 1 Start By:
Remove fuel injection pump and governor.
Illustration 1 g02805638
Inspect fuel injection pump and governor (1).
Remove tube (2).
Illustration 2 g02805639
Use suitable blocking and position the fuel injection pump and governor. Remove bolts (4) and remove governor housing assembly (3).
Remove two bolts (4B) and remove stop solenoid (4A). Replace o-ring if necessary.
Illustration 3 g02805640
Remove and inspect O-ring seal (5) from governor housing assembly (3). If necessary, replace O-ring seal (5) with new.
Remove shaft (6) and spring (7) from governor housing assembly (3). Remove governor lever (8).
Illustration 4 g02805641
Remove pin (10) from governor lever assembly (12).
Remove speed control lever (9) and spring (11) from governor lever assembly (12).
Remove spring (13) and remove governor lever assembly (12) with the O-ring seals.
Illustration 5 g02805656
Illustration 6 g02805658
Remove governor sleeve (13) and nut (16). Remove governor weights (15).
Illustration 7 g02805660
Illustration 8 g02805696
Remove nut (17) from gear (18). Note: Nut (17) has reverse threads.
Use Tooling (A) to remove gear (18).
Illustration 9 g02805716
Remove bolts (19) and retaining plate (20).
Remove fuel camshaft (24) from the housing assembly.
Remove screws (21) and retaining plate (22). If necessary, replace key (23) with new.
Illustration 10 g02805762
Illustration 11 g02805764
Illustration 12 g02805765
Use a suitable press and Tooling (B) to remove bearing (25) from fuel camshaft (24) and ring (27).
Use a suitable press and Tooling (B) to remove bearing (26) from fuel camshaft (24).