Servicing The Hydraulic Motor - WAGNER LineCoat 820 Manuel D'utilisateur

Hydraulic Motor
Item Part # Description
1 0349378 Trip retainer ..............................................2
2 0349379 O-ring ........................................................2
3 0349380 Trip spring .................................................2
4 0555478 Ball, SS .....................................................2
5 0349382 Spool / sleeve set .....................................1
6 0349383 O-ring ........................................................3
7 0349384 Cylinder head plug....................................1
8 0349385 O-ring ........................................................1
9 0349386 Flex lock nut .............................................1
10 0349516 Elbow, 90º ................................................1
11 0349388 Cylinder head ...........................................1
12 0349389 O-ring ........................................................2
13 0349390 Sleeve retainer .........................................1
14 0349391 Retainer ring .............................................1
15 0349392 Elbow ........................................................1
16 0349393 Piston retainer screw ................................1
17 0349394 Piston ........................................................1
18 0349395 Piston seal ................................................1
19 0349396 O-ring ........................................................1
20 0349627 Valve rod assembly ..................................1
21 0349633 Piston rod .................................................1
22 0349399 Lock ring ...................................................1
23 0349400 Cylinder ....................................................1
24 0349401 Rod seal ...................................................1
25 0555646 Motor/pump block, LC 820 .......................1
0555647 Motor/pump block, LC 840
0555680 Motor/pump block, LC 860
26 0349629 Motor tube ................................................1
27 0555648 Tee ...........................................................1
28 0349405 O-ring kit ...................................................1
29 0555480 O-ring ........................................................2
0349703 Motor Service Kit – Minor
(includes items 2-4, 6, 8, 9, 12,
18, 19 and 24)
GB
R
29
Quantity
20

Servicing the Hydraulic Motor

Perform this procedure using the necessary parts from Motor
Service Kit — Minor (P/N 0349703). If the hydraulic motor is
operable, start the machine and jog the piston rod (21) into its top
position.
Servicing of the hydraulic motor should be carried
i 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.
Disassembling the Hydraulic Motor
1. Disconnect the pressure hose from the elbow (36 and 37
in Hydraulic System parts list) 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 (25).
4. Remove cylinder head plug (7).
5. Loosen lock ring (22) with a spanner wrench and unthread
tube retaining nut on tee (27). Loosen tube retaining
nut on elbow (15). Slide the nut down. Push motor tube
(26) into tee (27) far enough to clear elbow (15). Slowly
unthread cylinder head (11) and Iift it just high enough
above the cylinder (23) to reach the valve rod assembly
(20) with vise grip pliers.
6. The piston rod (21) 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.
27
28
29
25
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