SPOOL 1704634 - Caterpillar

Align the slots of the two new 487-6424 Plates with the holes. The plates should be slightly shifted away from the “hinge” point where the ladder connects to the platform. The plates can be adjusted later once the ladder is on the machine.
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(4) 8T-4195 Bolt - Qty 4
(5) 7X-7729 Washer - Qty 4
Affix the plates to the Ladder with four 8T-4195 Bolts and four 7X-7729 Washers. Torque the 8T-4195 Bolts to 55 10 N m (40.56 7.37 lb ft).
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(6) 344-5675 Nut - Qty 2
(7) 4I-1205 Bumper - Qty 2
Add the two Bumpers 4I-1205 to the plates. with two M10 Nuts 344-5675. Torque the 344-5675 Nuts to 55 10 N m (40.56 7.37 lb ft).Attach Ladder to Machine
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(8) 6B-7988 Clevis Pin
(9) 3B-6411 Cotter Pin
(10) 2S-7593 Hard Washer
Attach the ladder to the platform. Through the holes, place the 6B-7988 Pin. On the outside of the ladder, place a 2S-7593 Washer. Once the pin is through the holes and the washers are in, add the 3B-4611 Cotter Pin through the hole at the end of the pin. Repeat for the other side of the ladder.
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After the ladder has been assembled and attached to the machine, fold the ladder up. Folding the ladder will be a check to determine if the latch brackets are correctly oriented. If the brackets are correctly aligned such that the ladder is both capable of being stored as well as being secure, then continue on to the next step where the brackets are fully welded on. If the brackets are not correctly aligned (the latch cannot be used), then remove the tack welds from the corners. Realign the bracket such that the latch can be operated, and tack weld the corners again as seen in a prior step.The brackets holding the bumpers to the ladder can also be slightly adjusted up and down. If the brackets are adjusted, ensure to torque the 8T-4195 Bolt to 55 10 N m (40.56 7.37 lb ft).
Illustration 22 g06126764
After the bracket alignment has been confirmed, fold the ladder down. Remove the latches and their hardware, safely setting them aside, they will be re-attached once the welds are complete. Place a 3 mm (0.118 inch) Fillet Weld along the top of the brackets. The weld will be as long as the entire arc between the bracket and handrail.
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Place a 3 mm (0.118 inch) Fillet Weld along the bottom of the brackets. The weld will be as long as the entire arc between the bracket and handrail.
Illustration 24 g06126687
(1) 8T-4189 Bolt - Qty 4
(2) 8T-4224 Hard Washer - Qty 4
(3) 492-3493 Latch As - Qty 1
Re-attach the new Latch As 492-3493 to the welded bracket on the front of the Platform with four 8T-4189 Bolts and four 8T-4224 Washers. Torque the 8T-4189 Bolts to 28 7 N m (20.65 5.16 lb ft). Repeat for the bracket on the rear of the platform following the