12
Problems That Cause Oil Leaks
A. Oil Reservoir
If the oil bath housing (2) is overfilled, oil will leak.
B. Weep Holes – Oil Seals or Piston Damage
If oil is leaking from the weep holes (12) , there is a leak in the oil seals (28 or 31)
or there is piston damage.
C. Pump Shaft Seal
A damaged or worn pump shaft seal (3).
SECTION 3 / OIL LEAKS
7...Swash plate ball bearing
6...Swash plate housing
4...Forward O-ring
2...Oil bath housing
37...O-ring
38...Ball bearing
39...Spring
9...Piston
42...High-pressure valve cap (3)
28..Oil seal (3)
29...Seal retaining ring (3)
30...Bushing (3)
47...High-pressure valve plate
49...Pump head bolt (4)
46...High-pressure valve seat (3)
43...High-pressure valve basket (3)
44...High-pressure valve spring (3)
45...High-pressure valve plate (3)
10...Piston spring
11...Piston housing
34...Water outlet
20...Water inlet
33...non-return check valve
32...Nozzle insert
21...Water
inlet filter
41...Detergent filter
with metering valve
8...Swash disk
36...Detergent
non-return check valve
40...Detergent tube
1...Pump shaft
35...Nipple
19...Bypass valve
18...Spring
17...Thermal relief valve
16...Thermal relief
valve housing
15...Screw (2)
14...Deflector cap
13...Fastening cap
22...Connection piece
23...Throttle
27...Low-pressure valve basket (3)
26...Low-pressure valve spring (3)
25...Low-pressure valve plate (3)
24...Low-pressure valve seat (3)
3...Swash plate shaft seal
5...Swash plate shaft ball bearing
12...Slot holes (3)
48...Pump head
31...High-pressure seal (3)
Pump 629 9/28/01 3:22 PM Page 12
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