Servicing The Hydraulic Motor - Titan ProMark 98:2 Série Mode D'emploi

maintenance
8.8

SerVIcINg The hyDrAulIc moTor

fIgure 22
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2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
Refer to the "SAE O-Ring Fitting Installation"
i
procedure, section 8.9.
36
Perform this procedure using the necessary parts from Motor
Service Kit — Minor (P/N 235-050). If the hydraulic motor is
operable, start the machine and jog the piston rod (19) into its
21
top position.
22
23
24
20
DISASSemBlINg The hyDrAulIc moTor
25
(A)
21
26
(B)
28
29
9
30
31
Servicing of the hydraulic motor should be
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carried out in a clean, dust free area only.
Any dust or metallic particles left in the motor or
entering it on reassembly may damage the critical
parts and affect its service life and warranty.
All parts should be inspected for absolute
cleanliness.
1. Disconnect the pressure hose assembly (B) from the elbow
on the back of the hydraulic pump.
2. Remove the two mounting screws and two lock washers
that attach the motor/pump assembly to the pump
support on the cart.
3. Place the motor/pump assembly in a vise, holding it
securely by the motor/pump block (31).
4. Remove cylinder head plug (1).
5. Loosen lock ring (28) with a spanner wrench and unthread
tube retaining nut on tee (24). Loosen tube retaining
nut on elbow (22). Slide the nut down. Push motor tube
(23) into tee (24) far enough to clear elbow (22). Slowly
unthread cylinder head (8) and Iift it just high enough
above the cylinder (29) to reach the valve rod assembly
(18) with vise grip pliers.
6. The piston rod (19) should be near the top of its stroke for
disassembly. It may be necessary to use a wood or nylon
driver to push the piston rod up to its top position.
7. Grip the valve rod securely with vise grip pliers and then
remove the FlexLoc nut (3) from the top of the valve rod
assembly (18). Be careful that spool (10) does not fall.
The cylinder head (8) can now be lifted off. Unthread the
cylinder (29) from the motor/pump block (31).
An extra lock ring (28) can be used to jam the two
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lock rings together on the cylinder and a pipe
wrench can be used to unthread the cylinder (29)
from the motor/pump block.
8. To remove the connecting pin (Fig. 23, item 1), slide the
retaining ring (2) down with a small screwdriver, and then
push the connecting pin out.
ProMark