Haulotte Group HT21RT O, Maintenance Book

Page: 153 / 282

153 4000511390 E03.16 USA / GB
Chassis and turntable
Dismantling / Reassembling wheels reducer
MS0026
11 - Assembly- Spindle-Brake
N.B.-:-U
SE AN AIR GUN TO CLEAN THE BRAKE PORT AND MAKE SURE THERE IS NO DEBRIS INSIDE
.
1. Place Spindle ( 1A ) such that the flange side is up. Press Ball Bearing ( 8B ) into Spindle ( 1A ) small
counterbore.
2. Place Stator ( 8K ) into the Spindle ( 1A ) callop cuts.
3. Place Rotor ( 8J ) on top of Stator ( 8K ).
4. Repeat steps 2 & 3 until there are a total of 9 Stators ( 8K ) and 8 Rotors ( 8J ) installed.
5. Place Spring ( 1L ) into Coupling ( 7 ) counterbore. Place the Pressure plate ( 1M ) on top of
Spring ( 1L ).
6. Use Truarc #0100 or equivalent pliers to install Retaining Ring ( 5 ) into the retaining ring groove in
the coupling counterbore.
7. Insert Coupling Subassembly ( 7 ) through Rotors ( 8J ).
8. Grease the 2 O-Rings ( 8F ) and ( 8D ) and the 2 Backup Rings ( 8H ) and ( 8E ).
9. Install small O-Ring ( 8F ) into the O-Ring groove in Spindle ( 1A ).
10. Install small Backup Ring ( 8H ) into the O-Ring groove in Spindle ( 1A ), on bottom of the small O-
Ring ( 8F ).
11. Set the Piston ( 8A ) so that the large diameter end id down. Install large Backup Ring ( 8E ) in the
large-diameter groove at the bottom of the Piston ( 8A ).
12. Install large O-Ring ( 8D ) in the large-diameter groove at the bottom of the Piston ( 8A ), on top of the
large Backup Ring ( 8E ).
13. Use appropriate tool to insert Piston ( 8A ) with backup ring and O-Ring into Spindle ( 1A ) until it con-
tacts Stator ( 8K ).
14. Insert 10 Springs ( 8L ) into Piston ( 8A ) holes.
15. Press Ball Bearing ( 8B ) in the Adaptor ( 1N ) and install Retaining Ring ( 8C ) into the retaining ring
groove.
16. Grease Seal ( 1K ) and insert it into groove of Adaptor ( 1N ).
17. Install O-Ring ( 8F ) into the outside O-Ring groove of the Adaptor ( 1N ).
18. Insert the Adaptor Subassembly into Spindle ( 1A ) with the O-Ring port on the spindle flange OD cen-
tered between 2 motor mounting holes on the Adaptor ( 1N ).
19. Secure the Adaptor ( 1N ) to the Spindle ( 1A ) with 8 bolts ( 21 ). Torque the bolts to 36-38 ft-lbs in
X pattern.
20. Use hydraulic hand pump to leak check the brake, record initial release pressure.
21. Disconnect 8rake Tester and Install O-Ring Plug or Plastic Plug ( 12 ). Tighten O-Ring plug according
to DIN standard if applicable.