ELBOW 3B6767 - Caterpillar

Tighten the bolts in the following sequence: Refer to Illustration 31.
6 bolts (B2) on support assembly (U)
4 bolts (B1) on support assembly (U)
4 bolts (A2) (both sides) on latch group (W)
4 bolts (A1) both sides on latch group (W)
8 bolts (S) on both plate assemblies (V) on ladder (T)Note: If ladder (T) is aligned and function properly, skip Step 4 and proceed to Step 5.
Illustration 32 g06321882
(U) 556-3444 Support As
(W) 515-1716 Swingout Ladder Latch Gp
Illustration 33 g06317368
(1) 488-2828 Shim
(2) 488-2465 Shim
If ladder latch group (V) needs more adjustment for proper ladder alignment, add any combination of shims (1) and (2) between ladder latch (W) and support assembly (U) bolted joint. Shims (1) or (2) can be installed at any four locations. Refer to Illustration 32 and Illustration 33.
Illustration 34 g06317388
(X) 135-8578 Bolt As
Remove two existing bolt assemblies (X) from the left-side fender. Do not discard. Reuse bolt assemblies (X) in the next Step. Refer to Illustration 34.
Illustration 35 g06317610
(3) 522-0163 Bracket As
(4) 135-8578 Bolt As
(X) 135-8578 Bolt As
Use two bolt assemblies (4) or (X) to install bracket assembly (3) onto the left-side fender. Do not tighten bolts (4) or (X) now. Refer to Illustration 35.
Illustration 36 g06317611
(AA) 521-3732 Plate As
(3) 522-0163 Bracket As
(4) 135-8578 Bolt As
(X) 135-8578 Bolt As
Lower the ladder to the fully DOWN position to align bracket assembly (3) to plate assembly (AA) Refer to Illustration 36.
Tighten two bolt assemblies (4) or (X) to secure bracket assembly (3) to the left-side fender. Refer to Illustration 36.Installing the Bottom Step on the Ladder
Table 12
Required Parts for Installing the Bottom Step on the Ladder
Item Qty Part Number Part Name
1 8 397-9301 Hard Washer
2 1 454-7802 Step
3 2 515-8734 Belt
4 4 518-3937 Plate As
5 4 520-7452 Plate
6 8 8T-4121 Hard Washer
7 8 8T-4185 Bolt
Illustration 37 g06321887
(BB) 515-2574 Ladder Gp
(1) 397-9301 Hard Washer
(2) 454-7802 Step
(3) 515-8734 Belt
(4) 518-3937 Plate As
(5) 520-7452 Plate
(6) 8T-4121 Hard Washer
(7) 8T-4185 Bolt
With the ladder in the DOWN position, use two bolts (7), two washers (6), one plate (5), two washers (1), and one plate assembly (4) to install rubber belt (3) onto the right-side of ladder (BB). Refer to Illustration 37.
Use two bolts (7), two washers (6), one plate (5), two washers (1), and one plate assembly (4) to install rubber belt (3) onto the left-side of ladder (BB). Refer to Illustration 37.
Use four bolts (7), four washers (6), two plates (5), four washers (1), and two plate assemblies (4) to install step (2) onto two rubber belts (3). Refer to Illustration 37.