Gradall 544B Parts Manual User Manual
Page 110
HYDRAULIC COMPONENTS
(9104-3065) Main Control ValveAssembly
Starting Serial No. 0155299S
Original Issue 8-86
Revised 2-5-97
KG
Item
Part No.
Qty.
Description Of Part
9104-3065
1
MAIN CONTROL VALVE ASSY
(includes all items)
9020-6417
AR
SEAL KIT
(includes items 31, 31b & 31c)
9104-4123
AR
SECTION SEAL KIT
(includes items 31b)
9103-4159
AR
SPOOL SEAL KIT
(includes items 31c)
9020-6419
AR
RETAINER PLATE ASSY
(includes items 46 & 47)
9104-4509
AR
HRO POSITIONER SEAL KIT
(includes items 12, 14, 23 & 24)
9104-4526
AR
NR PLUG KIT (includes items 41 & 42)
9104-4527
AR
NR PLUG SEAL KIT (items 42)
9020-6427
3
NEUTRAL POSITIONER KIT
(includes items 2 thru 9)
9104-4510
2
HRO POSITIONER KIT,
SPOOL POSITIONER END
(includes items 12 thru 26)
9104-4534
2
HRO POSITIONER KIT, CLEVIS END
(includes items 13, 20 thru 26, 43, 44 & 45)
9104-4530
AR
WH TYPE PORT RELIEF VALVE
SEAL KIT (includes items 36)
9104-4533
AR
WHA PORT RELIEF VALVE SEAL KIT
(includes items 34)
9103-4236
AR
MAIN RELIEF VALVE SEAL KIT
(includes items 49)
1
9104-4114
1
COVER PLATE ASSY (left end)
(includes item 48 & 49)
2
3
O-RING
3
3
WASHER
4
3
SPRING COLLAR
5
3
SPRING
6
3
SPOOL COLLAR
7
3
BONNET
8
6
LOCKWASHER
9
6
SCREW
10
9020-6421
1
SWAY SECTION
11
9104-4117
1
AUXILIARY SECTION
12
4
O-RING
13
9104-4516
4
SEAL PLATE
14
O-RING
Item
Part No.
Qty.
Description Of Part
15
9104-4521
2
STOP COLLAR
16
9104-4520
2
STOP SLEEVE
17
9104-4519
2
SPRING
18
9104-4518
2
SPRING
19
9104-4517
2
POSITIONER SPUD
20
9104-4515
4
BONNET
21
9104-4513
4
SCREW, COUNTERSUNK
22
9104-4514
4
TRAVEL STOP
23
4
O-RING
24
4
BACK-UP RING
25
9104-4512
2
SCREW
26
9104-4511
4
BOOT
27
9104-4119
1
TILT SECTION
28
9104-4121
1
CROWD SECTION
29
9104-4122
1
LIFT SECTION
30
9104-4535
5
LOAD CHECK PLUG
31
5
O-RING
32
5
SPRING
33
5
POPPET
34
AR
WHA RELIEF SEALS
35
9104-4531
2
WHA RELIEF(1500 p.s.i.)
36
AR
WH RELIEF SEALS
37
9104-4529
1
WH RELIEF(2650 p.s.i.)
38
9104-4532
2
WHA RELIEF(3250 p.s.i.)
39
9104-4124
1
COVER PLATE ASSY (right end)
40
9104-4125
1
STUD ASSY (includes four studs &
four nuts)(lubricate & torque to 23-27
ft.lbs.)
41
9104-4526
5
NR PLUG
42
AR
NR PLUG SEALS
43
9108-4232
16
BEARING PLATE
44
9108-4231
16
LOCKWASHER
45
9104-4522
16
HEX HD CAPSCREW, 1/4-20 x 3 1/2
46
12
CAPSCREW
47
3
RETAINER PLATE
48
9020-8136
1
MAIN RELIEF VALVE ASSY
49
9103-4236
1
MAIN RELIEF SEALS
NOTE: ONLY ITEMS WITH PART
NUMBERS ARE AVAILABLE
FOR SERVICE.
10-10
ARTWORK ON PREVIOUS PAGE
*
*
*
*
* Changed items included in kits, fixed starting serial number & added notes.