Jacobsen HR5111 Service And Repair Instructions page 134

HYDRAULICS
INSPECTION
1. Inspect all parts for signs of wear or damage.
2. Inspect needle bearing in housing and lock plate.
Needles should be free of excess play and remain
in the bearing cage.
3. Inspect pistons and shoes. Pistons should be snug
and shoes should be flat and have no signs of
flaking.
NOTE
Do not tap piston shoes.
SECTION 8I. TRACTION MOTOR
Figure 8I-3. Inspection
8I-2
4. Inspect piston block. Make sure the flat surface is
free of score marks.
NOTE
Do not lap piston block.
5. Inspect flat surface of back plate. It should be free
of score marks and metal build up.
NOTE
Do not lap back plate.