G3500B Engines Caterpillar

Illustration 1	g00979886
Front view

Note: Lubricate the bores for the O-ring seals (not shown) with engine oil.

(1) Spring

Length under test force ... 102 mm (4.02 inch)

Test force ... 518 ± 26 N (116 ± 6 lb)

Free length after test force ... 143.4 mm (5.65 inch)

Outside diameter ... 37.25 mm (1.467 inch)

(2) Bypass valve

The valve must move freely in the bore.

Start to open pressure ... 287 ± 7 kPa (42 ± 1 psi)

Fully open pressure ... 480 ± 7 kPa (70 ± 1 psi)

(3) Bolt

Torque ... 55 ± 7 N·m (41 ± 5 lb ft)

(4) Bolt

Torque ... 55 ± 7 N·m (41 ± 5 lb ft)

(5) Selector lever for the changeover valve

For the procedure to adjust the duplex filter's changeover valve, refer to Systems Operation/Testing and Adjusting, "Duplex Oil Filter - Adjust".

(6) Plunger

(7) Bracket

(8) Rod

(9) Lever

Illustration 2	g00980891
Right view

(10) Jam nut

Torque ... 45 ± 7 N·m (33 ± 5 lb ft)

(11) Nut for the changeover valve

Approximate torque for initial tightening ... 3 N·m (27 lb in)

After the initial tightening, scribe a mark in order to locate a corner of the nut. Unscrew the nut for the following amount in order to provide axial movement of shaft (12). ... 30 degrees

(12) Shaft

Axial movement of shaft ... 0.22 ± 0.08 mm (0.009 ± 0.003 inch)