JLG 4017PS Service Manual - Manual (Page 158)

Hydraulic System
8-26 3706PS, 3707PS, 4014PS, 4017PS, 33.7, 37.6, 37.7
14. Turn the gas valve/bleed valve (8) all the way in and
remove the schrader adapter (7) from the valve on
the accumulator.
15. Reassemble the protective cap onto the gas valve
on the accumulator.
8.12.4 Checking Pre-Charge
a. Gas Leaks
1. If an external leak is suspected, apply soapy water
to the gas valve (1) and the seams of the gas bottle
(2). If bubbles form, the accumulator has to be
replaced.
2. If an internal leak is suspected, check for foaming oil
in the hydraulic reservoir and/or no accumulator
action. If any of these signs are evident, the
accumulator has to be replaced.
MAM1440
1
2
2