Assembly; Lubrication; Operating Instructions; Raising The Jack - Jet JSJ-3XA Operating Instructions And Parts Manual

3-ton short chassis service jack
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6.0 Assembly

Numbers in parenthesis (#) refer to parts
breakdown, page 6:
1. Insert Upper Handle (30) into Lower Handle
(29) and fasten with Hex Cap Bolt (28).
2. Remove Handle Bolt (25).
3. Insert handle assembly into Handle Socket
(23). Make sure handle assembly engages
Gear Shaft (27) by turning handle back and
forth and observing movement of Handle
Socket Gear (26).
4. Install Handle Bolt (25) to secure handle
assembly.

7.0 Lubrication

Note:
Lubricate before initial operation, and
periodically
to
ensure
Lubricate jack at points 1 through 6, as indicated
in Figure 1.
Figure 1 – Lubrication points
1. Handle: Use #2 tube grease on release
valve gears below handle and lightly grease
handle at point where it fits into socket.
2. Wheels: Use 30W oil on axles and caster
bearings.
3. Lifting Arm: Inject #2 tube grease into
grease fitting.
4. Saddle and linkage: Use 30W oil on all
moving and pivoting parts.
5. Handle socket pivot bolts: Lubricate with
30W oil.
6. Plunger and plunger pin: Use #2 tube
grease to lubricate connection between
pump plunger and pin in handle socket.
smooth
operation.

8.0 Operating instructions

Important: During shipment and handling, air
sometimes gets into the hydraulic system
causing poor lifting performance. Before initial
operation, purge any air from system by fully
opening pump release valve (turn handle
counter-clockwise). Then, while holding saddle
down, pump handle rapidly several times.

8.1 Raising the jack

1. Close release valve by turning handle
clockwise until resistance is felt. Do not over
tighten.
2. Place jack directly under object to be lifted,
and pump handle to raise saddle to contact
point. Make sure saddle accepts weight
firmly and centrally.
3. Check positioning under slight load to
confirm jack or load will not slip, or move
suddenly.
4. Raise jack by pumping handle until desired
height is reached.
5. After lifting, secure and transfer load to jack
stands or other appropriate means. Do not
use jack as the only means of support.

8.2 Lowering the jack

Slowly turn handle counter-clockwise. Speed of
descent is controlled by amount release valve is
turned.

9.0 Maintenance

Store jack in a safe and dry environment, away
from children or unauthorized personnel. Always
store jack in fully lowered position, with handle in
upright position.
Keep jack clean and properly lubricated.
6

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