jcb 929/92400 Service Manual page 12

B6
D D
1 Examine the piston C, piston feeder D and barrel
A for signs of damage. Small scratches can be
carefully removed with fine emery cloth.
D D
2 Deep grooves or signs of pick-up (especially on
the lower sealing portion of the piston) will require
replacement of the component. Examine seal on
feeder D, replace if necessary.
F F
3 Examine the check valve ball F and ball seats for
signs of damage or excessive wear. Obtain new
components if necessary.
9803/1250
MAINTENANCE
BREAKER INSPECTION - HM 22, 25, 29
C C
A A
C C
A A
4 Examine the seals for signs of wear. Pay
particular attention to their lips. Obtain new seals
if necessary or if the piston is changed.
5 Examine the housing cap G and spool H for
signs of damage. Obtain new components if
necessary.
M M
L L
K K
6 Examine the plug K, seal washer L, spring and
trigger spool M for signs of damage or wear.
Obtain new components if necessary.
J J
H H
G G
J J
Issue 1
B6