McElroy Pitbull 14 User manual

42580101 1 2/17/09
No. 14 Pitbull Jaw Bushing Replacement Kit
A425801
This instruction sheet describes the steps necessary to replace the guide rod bushings and
seals in a No. 14 Pitbull movable jaw.
Kit Contents: Removal tool (425801), Bushing installation tool (425802), Seal
installation tool (413006), Support plate (413004), Reamer (MJL00070)
Tools Necessary: Arbor Press (Minimum Working Height 10”), Slotted Screwdriver
1. Remove the movable jaw from the Unit.
2. Remove the seals and wipers from one face of the movable jaw as shown in Fig. 1.
Fig. 1
3. Align the jaw to the support plate using the bushing installation tool (425802) as
shown in Figs. 2 & 3. (Note: The seals on the back side of the jaw will retain the jaw
bushing installation tool in place and guarantee alignment with the bore in the support
plate.)

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No. 14 Pitbull Jaw Bushing Replacement Kit
A425801
Fig. 2
Fig. 3
4. Insert the removal tool (425801) and press out the old bushings using an arbor press as
shown in Fig. 3.
Be careful to catch the installation tool, both old bushings, and the removal tool as they
clear the bottom of the jaw to avoid damage to the tools and possible injury.
5. Install one bushing from the front of the jaw using the installation tool. Install one
bushing from the back side of the jaw using the installation tool as shown in Fig. 4.
425802
413004
425801

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No. 14 Pitbull Jaw Bushing Replacement Kit
A425801
Fig. 4
6. Repeat steps 2-5 for the other side of the jaw.
7. Assemble unit and check to ensure that the jaw slides on the guide rods with a
minimum amount of force required on the lever handle. Remove the movable jaw.
8. If necessary, ream the bushings using the supplied reamer (MJL00070). Otherwise
proceed directly to step 9.
9. Install the seals with the flat sides facing each other, as shown in Fig. 5. Use the jaw
seal installation tool (413006) as shown in Fig. 6.
425802

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No. 14 Pitbull Jaw Bushing Replacement Kit
A425801
Fig. 5
Fig. 6
10. Reassemble the jaw onto the Unit.
11. Refill the oil reservoirs on top of the jaw with 10W40 motor oil. Take care not to
over tighten the pipe plug after filling.
413006