Chief Manufacturing Pit Boss 638699 - Manual (Page 19)

PIT BOSS
Users Manual
17
Machine Pit Layout
The PIT BOSS is designed specifically for use in a flush mount pit. Figure 39 shows the pit dimensions. For maximum
effectiveness it is essential that the hydraulic and air lines be run in conduit under the surface of the floor. The conduit should
be 2” inside diameter and must be acceptable for the use with concrete. Where ever the conduit emerges will mark the
location of the pump and stand. Be certain this is an acceptable area clear of traffic. The profile of the PIT BOSS and
accessories is shown in Figure 26. Placement of the pit should take into account these accessories plus additional space
needed for a comfortable work area.
Figure 39
Troubleshooting
PROBLEM CAUSE POSSIBLE SOLUTION
Pump will not Run Air supply disconnected Plug in air supply
Air supply not energized Turn on air supply
Bad pump Replace pump. Contact Chief Automotive Service Representative
for replacement.
Pump will not build
pressure or builds
pressure slowly Hydraulic fluid low Fill fluid reservoir to within 1” (25 mm) of top with SUS215 viscosity
@ 100°F (38C) 10W hydraulic oil with all cylinders down and
machine in loading position.
Contamination in fluid Remove and clean fluid. Contact Chief Automotive Service
Representative.
Contamination in cylinders Remove and inspect cylinders. (Refer to parts manual). Contact
Chief Automotive service representative.
Pump will not hold
pressure Hydraulic oil leak Check hoses, fittings, cylinders, and quick couplers for leaks.
Tighten or replace if necessary
Pump stalls or will not
start under pressure Contamination in fluid Remove and clean elbow fittings at cylinders. Contact Chief
Automotive Technologies Service Representative.
Too much weight
Insufficient air supply
Maximum total lift capacity (including 2000 lb Shop Hopper) is 8500
lbs.
Use different air supply.
Tower cylinder jumps Air in hydraulic system Bleed hydraulic system
Tower cylinder will not
extend Auxiliary line valve closed Open auxiliary line valve one turn
Auxiliary line not connected
to tower Connect auxiliary line to tower
Lift switch turned on Turn off lift switch
Pump will not build pressure See pump problems above
Collars jump under load Improper fit between collar
and tower pipe Refit collar – Contact Chief Automotive service representative.