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25R491 Lower Flow Medium Pressure BPR, Mechanical
Apply NLGI Grade 2 grease (Chevron SRI).
1
Torque to 175–200 in-lbs (20–23 N•m).
4
Torque to 60–70 ft-lbs (81–95 N•m).
5
Apply metal assembly paste to threads
6
®
(Molykote
G-N paste).
Apply thread sealant.
7
F
. 3: 25R491 Lower Flow Medium Pressure BPR, Mechanical
IG
Ref.
Part
Description
1
19C099 CYLINDER, VALVE
2
19Y873 HOUSING, BPR, MEDIUM
PRESS
3
238932 PISTON, VALVE
4
238933 SEAT, VALVE
5
113751 RING, RETAINING, INTERNAL
6
166986 SPRING, HELICAL
7
189817 GASKET
8
111796 SEAL, U-CUP
3A7681A
13
6
17
6
12
1
5
6
Ref.
Qty.
1
9
1
10
11
1
12
1
13
1
1
14
1
17
1
6
8
1
9
5
Part
Description
171885 WASHER
166985 PACKING, O-RING
101748 PLUG, PIPE SST
166988 GUIDE, SPRING
20A104 ADJUSTER, SCREW, BPR,
SPRING
101970 PLUG, PIPE, HDLS, optional if
gauge is not used (not shown)
20A105 NUT, LOCK, REGULATOR, BPR
Parts
3
1
4
4
7
10
1
2
11
Qty.
1
1
1
1
1
1
1
11
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