AD55B Underground Articulated Truck Power Train Caterpillar


Relief Valve (Torque Converter Inlet)

Usage:

AD55B JNW



Illustration 1g01257430



Illustration 2g01309006

Section A-A

Bench test specifications

Pressure setting ... 897 ± 35 kPa (130 ± 5 psi)
Bypass drain flow ... 15 ± 2 L/min (4 ± 0.5 US gpm)

(1) Cap

Final installation torque ... 85 ± 10 N·m (65 ± 7 lb ft)

(2) 3T-9920 Spring

Length under test force ... 38.6 mm (1.520 inch)
Test force ... 307 ± 25 N (69 ± 6 lb)
Free length after test ... 52.32 mm (2.060 inch)
Outside diameter ... 20.95 mm (0.825 inch)

(3) 145-0107 Spacer

Thickness ... 1.6 mm (0.063 inch)
Outside diameter ... 20.62 ± 0.25 mm (0.8 ± 0.0098 inch)

(4) Lubricate the O-ring seal lightly with the lubricant that is being sealed.


NOTICE

Adjustment of the torque converter relief valve must only be carried out in a test bench procedure


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