Full Product Manual

Rev. 1/24/2018 WTJ-4, MANUAL

Assembly Instructions:

Refer to exploded parts diagram on p. 3 and bills of materials (p. 4 or p. 5). Numbers in parentheses () correspond to

item numbers in the diagram.

1) As shipped, the receiver (32), turntable locking knob and bolt (33 & 34), bearing cup (30), tapered roller bearing

(29), bushing (43), and turntable (28) are assembled. Once this assembly is attached to the foundation and the

foundation has cured adequately (if installed in a fixed location), complete the rest of the assembly in Steps 2–11.

2) Fasten the mast (5) to the turntable with M12x40mm bolts (27) and corresponding flat washers (15), lock washers

(14), and hex nuts (13). Fasten the mast to the turntable with 6 sets of fasteners (27, 15, 14, and 13). Insert bolts

upwards through the bolt holes.

3) Attach the boom (9) and large pulley (4) to the top of the mast. Position the end of the boom inside the top of the

mast and align bolt holes. Insert the M16 shoulder bolt (42; the bolt has two smooth/unthreaded shoulders)

through the bolt holes on one side. Slide the large pulley (4) and the bushing (3) onto the free end of the bolt; then

insert the bolt through the other side of the boom and mast. Secure it with an M16 flat washer (24), lock washer

(23), & hex nut (22).

4) Attach the pump (25) to the crane. First, attach the base of the pump to the mast using the M16x90mm hex bolt

(26). The bolt is approximately 3.5 inches long. Secure the bolt with an M16 flat washer (24), lock washer (23),

and hex nut (22). Next, attach the pump plunger/piston to the underside of the boom with an M16x80mm hex bolt

(21). The bolt is just a bit longer than 3 inches. Secure the bolt with an M16 flat washer (24), lock washer (23),

and hex nut (22). Put the pump handle in its retainer on the side of the mast (see “Crane features” on p. 7).

5) Slide the telescoping boom (11) into the boom. Fasten the booms together with an M14x100mm hex bolt (10) at

either location A or location B. Install an M14 flat washer (8), lock washer (7), and hex nut (6).

NOTE: Instead of an M14x100 bolt, washers and nut, your hardware kit might include a clevis pin (with chain)

and a hitch pin. Slide the clevis pin through the holes. Secure it with the hitch pin.

6) Attach the winch (1) to the bracket on the back of the mast with two M10x20mm hex bolts (37). Secure each bolt

with an M14 flat washer (39) and lock washer (38).

7) Connect the winch handle to the winch with an M8 flat washer (washer is thicker than an ordinary flat washer) and

M8x25mm hex bolt (~1inch long).

8) Insert the mast handle (35) into the handle socket on the mast. Secure the handle in the socket with a hitch pin

(40).

9) Install the small pulley (16) in the free end of the telescoping boom. Bearing (17) is already installed in the center

of the pulley. Align the hole in the pulley with the bolt holes in the end of the boom and insert an M12x85mm hex

bolt (12) through the holes. Secure the free end with an M12 flat washer (15), lock washer (14), and hex nut (13).

10) Turn the winch handle counterclockwise to unwind cable (2). Unwind approximately 10 feet of cable. Feed the

end of the cable over the groove in the top of the big pulley and through the boom. Continue feeding cable

through the telescoping boom & into the groove on top of the small pulley. Look at the underside of the

telescoping boom. There is a rectangular slot near the end below the small pulley. Feed the end of the cable

through the slot from the inside of the boom.

11) Lift a test weight with the fixed hook equal to 125% of the rated capacity (2,500 lb.). Inspect the crane and the

installation site after performing the load test. Look for cracks, warps, and other forms of damage to and around

the installation site. Repair the site if necessary. Perform another load test to confirm that problems are resolved.