Illustration 3.H.3: Tong Assembly - Top Fastener Locations - Farr HD8625 Technical Manual

hD8625 8- " 35K T
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ong
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Assembly Procedures (continued...):
26. Locate the three un-threaded holes in the side body of the tong, one in the rear centre and one just to either side of the front opening.
If old dowel pins are in place, remove them before installation of the top plate. If the dowel pins are in any way damaged or deformed
McCoy recommends replacing them with new 3/8" x 1-1/2" hardened dowel pins. If necessary clean the dowel pin holes, and do not
insert dowel pins until after the top plate has been installed.
27. Use a temporary lifting sling and crane to maneuver the top plate (PN 1050-7T) into position, and place on to the side body. Insert
the three positioning dowel pins (PN 09-0092) through the top plate into their respective holes in the side body. Use a hammer to tap
the dowel pins until they are flush with the top plate. Secure the top plate with 14 3/8" UNC x 1-1/2" hex bolts and 3/8" lock washers,
and ten 3/8" UNC x 1" hex socket head cap screws as shown in illustration 3.H.3. Do not install fasteners at the rigid sling hanger
locations, indicated by the red circles, or the door cylinder mounting lug location indicated by the green circle.
28. Install half-moon idler pad (PN 997-D17-109) over the end of the pinion idler shaft and secure with three 5/8" NC x 2-3/4" hex bolts
and 5/8" lock washers, followed by a 1-1/2" UNF nylock nut.
29. Slide the remaining rotary idler pads over the rotary idler shafts and secure with 1-1/2" UNF nylock nuts.
30. Press the remaining pinion bearing (PN 1234-08-01B) into the top pinion bearing cap and install over the top of the pinion gear shaft
- secure with four 1/2" NC x 1-1/2" hex bolts and 1/2" lock washers.
31. Install top clutch bearing retainer (PN 997-HT-59) over the clutch shaft into the cutout in the top plate and secure with two 10-24 x
3/4" hex socket head cap screws.
32. Insert top clutch bearing (PN 02-1403), followed by the clutch bearing bushing (PN 997-HT-60).
33. Install clutch drive gear (PN 997-HT-61) and secure with retaining snap ring (PN 1234-00-04).
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