Jacobsen AR3, Technical/Repair Manual

Page: 243 / 342

6-52 4181384 First Edition
HYDRAULICS
6
Brake Release Valve
Removal and Installation
See Figure 6-48.
1. Park the mower safely. (See “Park Mower Safely” on
page 1-7.)
2. Drain hydraulic oil.
Figure 6-48
NOTE
Mark hydraulic hoses to aid in installation. Close all
openings with caps or plugs to prevent contamination.
3. Disconnect three hydraulic hoses (5). Retain orifice
disc (2) and mark hose where removed from.
4. Remove mounting cap screws (1), nuts (3) and
washers (4). Remove brake release valve from
mower.
Installation Notes
• Install brake release valve by reversing the order of
removal.
• Ensure new O-rings are in place before installing
hoses on fittings. Insert orifice disc in proper hose
connection.
• Replace hydraulic filter.
• Refill hydraulic tank. (Refer to “Safety, Operation, and
Maintenance Manual” for oil specifications.)
• Start engine and check brake release valve
operation. Check for leaks and repair as necessary.
Disassembly, Inspection, and Assembly
NOTE
Mark location and orientation of fittings on brake release
valve.
1. Remove fittings from brake release valve.
2. Inspect and repair, or replace brake release valve as
needed.
Assembly Notes
• Always use new O-rings and seals.
• Lubricate all O-rings prior to assembly.
• Assemble brake release valve by reversing the order
of removal.
TN1264
2
3
4
1
5