Integral Brake Check Procedure - JLG 340AJ Service And Maintenance Manual

Integral Brake Check Procedure

1. Using appropriate fittings to connect hydraulic line from
hand pump to the brake port.
2. Check to see that brake is set by trying to rotate Input
Shaft (9). This can be accomplished by installing an
appropriate tool (any tool that can locate on the splines
of the Input Coupling (7), such as a mating splined shaft)
into Input Coupling (7).
3. Bleed brake. Increase hydraulic pressure gradually while
trying to rotate the input until brake just starts to
release. Note this pressure. Make sure the pressure falls
into the appropriate range below.
BRAKE CODE INITIAL RELEASE PRESSURE RANGE (psi)
K
3121259
240-260
– JLG Lift –
SECTION 3 - CHASSIS & TURNTABLE
4. Increase pressure to 3,625 psi and hold for 60 seconds to
check for leaks. Repair leaks if necessary.
NOTE: Make sure that brake re-engages when pressure is
released.
NOTE: When done, make sure input coupling is centered in the
spindle to make installation of motor possible without
release of brake.
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