Caterpillar — Rechecking The Alignment
Adjustments · Electric Set
From a Caterpillar service manual covering: 3208, 3304, 3306B, 3406, 3408C, 3412, 3412C, 3508, 3512, 3516, D330, D333…. Check it applies to your exact model before use.
Applies to: Caterpillar 3208, Caterpillar 3304, Caterpillar 3306B, Caterpillar 3406, Caterpillar 3408C, Caterpillar 3412, Caterpillar 3412C, Caterpillar 3508, Caterpillar 3512, Caterpillar 3516
Procedure
- Loosen the sixteen close coupled adapter bolts (2); visually ensure they are centered in clearance holes.
- Check gaps at 3, 6, 9, and 12 o'clock positions; use 2, 4, 8, and 10 o'clock if 12 and 6 are inaccessible.
- If gaps are between 0.03 mm (0.001 inch) and 0.13 mm (0.005 inch), tighten all bolts; alignment check complete. If not, loosen bolts fastening generator to base frame; adjust shims; move rear of gener
- After adjustment, tighten generator mounting bolts to one half of standard torque 450 N-m (332 lb ft); repeat procedure starting with Step 1.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- 0.03 mm (0.001 inch) to 0.13 mm (0.005 inch)
- 450 N-m (332 lb ft)
Full service-parts list: Caterpillar 3208 →, Caterpillar 3304 →, Caterpillar 3406 →, Caterpillar 3408C →, Caterpillar 3412 →, Caterpillar 3412C →, Caterpillar 3508 →, Caterpillar 3512 →, Caterpillar 3516 →
Source: Caterpillar service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.