TM 5-3805-280-24-2
Cooling System
INSPECT, CLEAN, AND MEASURE WATER
25
15
PUMP PARTS
1. Inspect water pump housing (A) for cracks or damage.
2. Remove gasket material from housing and clean with
solvent. Dry with compressed air.
3. Inspect parts for wear or damage.
Water Pump Impeller Bore--Specification
ID ............................................................................... 11.973--11.999 mm
(0.4714--0.4724 in.)
Water Pump Bearing Shaft (Impeller End)--Specification
OD ............................................................................. 12.025--12.038 mm
(0.4734--0.4739 in.)
Water Pump Bearing Shaft (Pulley End)--Specification
OD ............................................................................. 39.997--40.013 mm
(1.5747--1.5753 in.)
Water Pump Housing Bearing Bore--Specification
ID ............................................................................... 61.961--61.987 mm
(2.4394--2.4404 in.)
A--Housing
B--Bearing
4. Remove foam filters and clean out weep holes in
C--Shaft
D--Internal Snap Ring
housing. Inspect weep holes for oil or coolant leakage.
E--External Snap Ring
F--Seal
Oil leakage indicates a damaged sealed bearing (B).
G--Impeller
Coolant leakage indicates a damaged housing seal
(F).
RG,25,JW7555
1920NOV971/1
13-338
