Oil Pressure Relief Valve
Usage:
Pressure setting (when the valve should lift) ... 345 to 415 kPa (50 to 60 psi)
(1) Diameter of plunger bore in housing ... 14.237 to 14.288 mm (.5605 to .5625 in)
(2) Outside diameter of plunger ... 14.186 to 14.211 mm (.5585 to .5595 in)
Clearance of plunger in bore ... 0.03 to 0.10 mm (.001 to .004 in)
Length of plunger ... 23.813 mm (.9375 in)
(3) Spring:
Length under test force ... 32.51 mm (1.28 in)
Test force ... 34.5 to 36.7 N (7.76 to 8.24 lb)
Free length after test ... 39.6 mm (1.56 in)
Outside diameter ... 9.35 to 9.58 mm (.368 to .377 in)
Caterpillar Information System:
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4.236 DIESEL ENGINE FOR BACKHOE LOADERS Systems Operation
4.236 DIESEL ENGINE FOR BACKHOE LOADERS Testing And Adjusting
D4H, D4H SERIES II, AND D4H SERIES III TRACTORS POWER TRAIN Introduction