Chief Manufacturing Pit Boss 638699 - Manual (Page 15)

PIT BOSS
Users Manual
13
Bleeding Air in System at Tower Cylinder (Continued)
4. While holding rag over the top of the cylinder to prevent
oil spray, use a 3/16” T-handle allen wrench, loosen
cylinder top bolt ½ turn.
5. Rapid, side-to-side motion of the T-handle may be
necessary to unseat the seal washer at the top of the
cylinder.
CAUTION:
Wear safety glasses to protect eyes
from hydraulic oil in the event it squirts
past rag.
6. Trapped air or trapped air/oil mixture (indicated by foam
in the oil) should escape from top of cylinder. Wipe up
escaping oil with rag.
7. When cylinder is completely bled, only clean oil should
escape from top of cylinder.
NOTE: It may be necessary to tighten top
cylinder bolt and repressurize system
to 2000 psi and repeat procedure
8. Replace tower head and chain. Lower tower cylinder
and refill reservoir to within 1” of fill port with all cylinders
in retracted position.
Machine Placement
Refill Hydraulic Fluid Reservoir
The hydraulic pump contains 1.75 quarts (1.7 liters) of
hydraulic oil. When refilling or adding oil, fill to within 1” (25
mm) of fill port using SUS 215 viscosity @100
8F (388C) 10W
hydraulic oil.
CAUTION:
Fill pump reservoir with all cylinders
retracted and lift in lowest position.
DO NOT overfill pump reservoir.
Scissor Lift Assembly
All scissor lift pivot points are permanently lubricated and do
not require maintenance except for occasional cleaning.
Scissor Lift Base
Using compressed air, blow dirt and debris from the base. If
necessary, use stiff brush to remove build up of dust and paint
on the surface.
CAUTION: Wear safety glasses while using
compressed air to blow out dirt and dust.
NOTE: Refer to Parts Manual for detailed
exploded views of referenced parts.
Contact Chief Automotive with any
questions regarding the usage or
maintenance of the PIT BOSS system.
The PIT BOSS System has many accessories that add to the overall footprint of the lift. Use Figure 26 as a guide to
plan for the working space needed when installing the PIT BOSS.
Figure 26