Farr HD8625 Technical Manual Download Page 54

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3.12

hD8625 8-

” 35K T

ong

echnical

anual

Assembly Procedures

1.  Position the tong body gear case on a suitable stationary support, ensuring that the bottom body plate remains accessible.
2.  Slide a support roller shaft spacer (PN 1037-C-134) into each support roller (PN 1037-135) (total of 12).
3.  Press support roller bearings (PN 02-0094) into each side of the support rollers. Assemble five support roller assemblies as shown

on Pp. 5.4 - 5.5.

4. Install five support roller assemblies along one side of the body case. Insert shafts through assemblies, but do not install the bottom

nylock nuts or, where used, the top washers.

5. Install rotary gear, making sure the backing pin slots are on the side facing up. Ensure one side is supported by the support rollers

installed in Step 4, and have the opening in the rotary gear oriented as shown in the following illustration.

llustratIon

3.H.1: t

ong

ssemBly

- r

otary

ear

nstallatIon

6. Install support roller assemblies in the locations exposed by the opening in the rotary gear. Continue to rotate the rotary gear, install-

ing support roller assemblies in the rotary gear opening as it is rotated. Finish with the rotary gear aligned with the opening in the

bottom plate and completely supported by the support rollers. Do not install the door pivot support roller assembly at this time.

7. Press pinion bearing (PN 1234-08-01B) into bottom pinion bearing cap (PN 1050-89), and install bearing cap into bottom plate of

tong using four 1/2” NC x 1-1/2” hex bolts and 1/2” lock washers.

8. Press lower clutch bearing (PN 02-0014) into clutch bearing cap (PN 101-0120), and install bearing cap into bottom plate of tong

using four 3/8” NC x 1-1/2” hex bolts and 3/8” lock washers.

9. Install a retainer clip (PN 02-0009) into both rotary idler gears (PN 997-A2-119C). Press an idler bearing (PN 02-0075) into each gear

and secure with a second retainer clip.

10. Lightly grease the larger circumference of the two rotary idler shafts (PN 1050-D5-117) and slide them through the bearing and gears

assemblies, centering the gear on the shaft.

11. Slide two bearing seals (PN 02-0010) over each end of the idler shafts and press against the retainer clips (see Pp. 5.6 - 5.7 for

correct orientation).

12. Slide a bearing spacer (PN 1050-D5-121) over each end of the rotary idler shafts.
13. Place each rotary idler assembly through the bottom plate, ensuring the ends of the shafts with the threaded hole for the grease

fitting are pointed upward and the rotary idler gears mesh with the rotary gear.

14. Place an idler pad (PN 997-D20-125) over the bottom side of each rotary idler shaft, and secure each with a 1-1/2” UNF nylock nut.
15. The low pinion gear (PN 997-A5-88) is machined with shoulders around the centre spline on both sides of the gear. Place the side

of the low pinion gear with the smaller shoulder over the lower bearing and bearing cap, centering as best as able.

ainTenance