32
The BRADEN brake valve is a reliable hydraulic valve with internal
components manufactured to close tolerances. Because of close
tolerances and mating of components, the valve housing, spool,
piston, and check poppet are not available as replacement parts.
Before disassembling the brake valve, be sure you have con-
ducted all applicable troubleshooting operations and are cer-
tain the brake valve is causing the malfunction.
Thoroughly clean the outside surfaces of the valve and work
in a clean dust free area, because cleanliness is of utmost im-
portance when servicing hydraulic components.
DISASSEMBLY
1. Remove the pilot orifice from the brake-release (BR) port
using a 5/32-inch Allen wrench.
2. Remove the elbow fitting, motor drain check ball and
spring.
3. Remove the spool spring retainer and spool spring. Check
spring free length. Replace spring if less than 1-15/16
inches (49.2 mm) long.
4. Remove spool plug and carefully remove spool assembly.
NSS - Not sold separately
* - Included in brake O-ring kit No. 61567
PARTS IN
81712
BRAKE
VALVE
ITEM
NO.
DESCRIPTION
PART
NO.
QTY.
1
Break valve housing
NSS
1
2
Valve spring retainer
24424
1
3
Spring retainer
24183
1
4
Plug
22450
1
5
Spool
NSS
1
6
Damper piston
NSS
1
7
O-ring *
24186
2
8
Check-valve poppet
24423
1
9
Pilot orifice
24200
1
10 Check-valve spring
24190
1
11 Spool spring
24192
1
12 O-ring *
23601
2
13 O-ring *
24193
1
14 O-ring *
24194
1
15 Back-up ring *
24195
1
16 Back-up ring *
24196
1
17 Steel ball
21158
1
18 Compression spring
25480
1
19 Elbow fitting
25302
1
19 Hex head plug (–4
ORB)
25663
1
22 Shim, valve spring
25661
-
59 O-ring *
13838
1
ITEM
NO.
DESCRIPTION
PART
NO.
QTY.
17
Steel ball .250 SS
21158
1
18
Compression spring
25480
19
Elbow fitting
25302
STANDARD GEAR MOTOR VALVE
PART NO. 81712
BRAKE VALVE SERVICE
19
1
2
3
5
6
7
8
7
11
12
13
14
16
17
18
12
59
22
1
9
10
4
