Barko 830B, Service Manual

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60-43 ®
SERVICE- SERIES 45 HYD PUMP
(continued...)
4
12 N•m
[9 lbf•ft]
12 N•m
[9 lbf•ft]
12 N•m
[9 lbf•ft]
6 N•m
[5 lbf•ft]
12 N•m
[9 lbf•ft]
9 N•m
[7 lbf•ft]
3.3 LS and PC Controls (Fig-4)
Ÿ
LS control shown; parts C104 through C106 and C112 through C118 are not used on PC control
3.3.1 Disassembly
7.
6.
2.
5.
1.
3.
4.
Remove the 4 screws (C300) holding the
control housing onto the endcap.
Remove the control and discard the 4
interface
O-rings (C200)
.
Remove the PC set screw (C102) , PC
adjusting plug (C138) , O-ring (C138A) ,
springs (C134, C135) , and seat (C133) .
Discard the O-ring.
Remove the
plug (C103)
,
O-ring (C103A)
,
and PC spool (C132) from the control
housing. Discard the O-ring. Note orientation
of the spool for reassembly.
Ÿ
For PC only controls, skip steps 5
through 7
Remove the
plug (C105)
and
O-ring
(C105A) , or the plug (C106) and O-ring
(C106A) . Discard the O-ring (C105A or
C106A) .
Remove the LS set screw (C102) , LS
adjusting plug (C118) , O-ring (C118A) ,
back-up rings (C118B)
,
springs (C114,
C115) , and seat (C113) . Discard the O-ring
and backup rings.
Remove the plug (C104) , O-ring (C104A) ,
and LS spool (C112) from the control
housing; discard the O-ring. Note orientation
of the spool for reassembly.
Fig-4
3.3.2 Inspection
1.
2. Inspect the springs and spring guides for
wear or damage; replace as necessary.
Inspect the adjusting plugs for wear at the tips
and where they contact the seat; replace as
necessary.
4.
3.
5.
Carefully inspect the spools. Ensure the sealing lands are free of nicks and scratches. Check the
ends that contact the spring guides for wear. Replace spools as necessary.
Inspect the control housing for damage. Check the spool bores for excessive wear.
Clean all parts and lubricate spools, springs, guides, and new O-rings with clean hydraulic fluid.
06/05/2019
Updated
SERVICE