Fuel Transfer Pump
Usage:
(1) Clearance between guide and tappet ... 0.0038 to 0.0102 mm (.0002 to .0004 in.)
NOTE: The guide and tappet are a matched set. If one part is worn, a new guide and tappet assembly must be installed.
(2) Bore in sleeve for the piston ... 34.000 ± 0.015 mm (1.3386 ± .0006 in.)
Diameter of piston ... 33.972 ± 0.008 mm (1.3375 ± .0003 in.)
(3) 1W4922 Spring:
Length under test force ... 35.34 mm (1.391 in.)
Test force ... 211 ± 10 N (47.5 ± 2.3 lb.)
Free length after test ... 60.0 mm (2.36 in.)
Outside diameter ... 27.0 mm (1.06 in.)
(4) Fuel inlet port.
(5) Check valves.
(6) Fuel outlet port.
Caterpillar Information System:
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