Lull 6K Service Manual - Manual (Page 579)

Brakes
Service Manual — Models 644B, 6K, 844C, 8K, 1044C, 10K 9-5
The brake testing and bleeding procedure is complete.
Accumulator Pre-charge 15. The following procedure is for adjusting accumulator pre-charge (from
Step 7 above).
a. If test gauge pressure reads too high, slowly turn out gauge
bleeding valve (Item 4) to release pressure and tighten when
375–425 psi on accumulator gauge (Item 5) is indicated.
b. If test gauge pressure reads too low, charge accumulator as
described in “Pre-Charging Accumulator” on page 9-19 (through
Step 12).
c. If correct pressure cannot be achieved, replace accumulator,
reinstall test gauge, and adjust accumulator to correct pressure.
d. Return to Step 8 under “Testing and Bleeding” and continue.