G379, G398 & G399 ENGINES Caterpillar

(1) Dimension for valve testing with two 1S9039 Spacers (5) in place:

Put pressure in chamber at (A) ... 47 to 51 kPa (6.65 to 7.20 psi)

Maximum dimension under test pressure ... 73.48 mm (2.893 in.)

(2) 2S4655 Spring:

Length under test force ... 77.5 mm (3.05 in.)

Test force ... 363 ± 18 N (81.5 ± 4 lb.)

Free length after test ... 108.7 mm (4.28 in.)

Outside diameter ... 66.8 mm (2.63 in.)

(3) Torque for nut ... 6.3 ± 1.7 N·m (55 ± 15 lb in)

(4) Torque for bolts ... 6.3 ± 1.7 N·m (55 ± 15 lb in)

(5) 1S9039 Spacers for altitude adjustment:

Use two between ... 0 to 457 m (0 to 1500 ft.)

Use one between ... 457 to 1219 m (1500 to 4000 ft.)

Use none between ... 1219 to 1981 m (4000 to 6500 ft.)