jcb Robot 160 - Front Housing

Section E - Hydraulics
Drive Motors
Motors - Tracked Machine
E - 94 E - 94
9803-9450-2
Table 21. Torque Settings
Fig 82.
Motor Dismantling
K Fig 80. ( T E-92).
Remove the brake assembly K
Dismantling ( T E-93)).
Withdraw shaft 18. Inspect bush 19 for wear and remove if
necessary using a suitable puller.
Mark the relative positions of the front case 50, rear case
21 and brake housing 12.
Remove capscrews 20 and separate the rear case
assembly 21 from the sinusoidal cam rotational assembly
24 and set aside in a clean area. Separate the sinusoidal
cam rotational assembly from the front case 50.
Remove and discard ‘O’ rings 22 and 25.
Rotating and Rear Casing Assembly
Withdraw the cylinder block 24 from the sinusoidal cam
assembly 23. Remove each piston and roller assembly 26
and 27 from the cylinder block. If difficulty is experienced,
apply low pressure air to the ports in the cylinder block.
Remove the roller 26 from each piston assembly.
To release distributor 28, drop the rear case 21 assembly
from a height of approximately 8 cm (3 in) onto a wooden
surface. Take care not to damage the timing face. Collect
the six springs 29.
Remove stop pin 30 from the rear case. Also remove and
discard seal rings 31 to 34.
Flushing Spool Assembly
Note: If the flushing spool assembly is working correctly it
need not be disturbed.
Remove plug 36 from the rear case 21. Remove spring 38
and washer 39. Depress spool 40; this should move freely
back and forth.
Remove spool 40 and spring 41.
Remove plug 42, spring 44, together with shim(s) 45, and
flushing relief spool 46. Check orifice in spool is clear.
Flush the rear case 21 thoroughly.
Front Housing
Using a soft steel drift, remove split ring 47 and washer 48.
Support the front case on blocks and press shaft 49 out of
bearings 51 and 54. Remove and discard seal 52.
Remove the cone from bearing 54. Using a soft steel drift,
remove bearing cups 51 and 54 from the front casing.
Remove bearing cone 54 from shaft 49 using a puller. This
action may damage the bearing cone, in which case it
should be replaced.
Remove and discard shaft seal 53 from front casing 50.
Reassembling
Thoroughly clean all components. Use new seals and ‘O’
rings. Lubricate components with engine oil on re-
assembly.
Front Housing
Warm outer bearing cone 51 and press onto shaft 49 using
a bench press.
Item Nm kgf m lbf ft
10 (8 off) 70 - 77 7.2 - 7.9 52 - 57
1 (12 off) 35 - 39 3.6 - 4.0 26 - 29
1
2
4
6
8
10
12
7
11
9
5
3
Y