Cummins/Onan — T-35 Assembly of Rotating Assembly
Repair & overhaul · Rotor assembly
From a Cummins/Onan service manual covering: ST-50, T-18A, VT-50. Check it applies to your exact model before use.
Browse Cummins/Onan generators & specs →
Before you start
- Do not over torque the nut; it deforms the shaft and can cause oil leakage
- Do not exceed recommended V-band clamp torque
Procedure
- Position sealing ring in groove on turbine end of rotor shaft and insert turbine wheel and shaft into bearing housing.
- Lubricate rotor shaft and bearing with clean oil and insert bearing over shaft into housing bore.
- Install new thrust washer with balance mark aligned to shaft and facing outward.
- Install oil seal assembly into oil seal plate and install new O-ring on oil seal plate.
- Press compressor wheel on shaft aligning balance marks.
- Install new locknut and torque to 120 to 130 in-lb [13.6 to 14.7 N-m].
- Lubricate turbine housing bore with heat resistant compound and insert rotor assembly, aligning marks.
- Install new red O-ring and compressor housing, then V-band clamps with new hardware.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Rotor nut 120 to 130 in-lb [13.6 to 14.7 N-m]
Source: Cummins/Onan 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.