Cummins/Onan — Muffler Installation (Exhaust Muffler Kit)
Installation
From a Cummins/Onan service manual covering: ES2075s, FS1870s, M11979s, M1976s, M1977s, M1978s. Check it applies to your exact model before use.
Applies to: Kubota 2482B engine
Before you start
- Exhaust gas presents the hazard of severe personal injury or death; the tailpipe must terminate away from any vent, window or opening into the cab or sleeper.
- Excessive exhaust back pressure can cause engine damage.
Procedure
- Assemble the two exhaust mounting brackets to the bottom of the power unit with 1/4-20 mm bolts.
- Install the muffler and secure it to the mounting brackets with U-bolts, washers, lock washers and mounting nuts.
- Secure the muffler inlet pipe to the exhaust manifold outlet with the exhaust clamp.
Specs & values
- Tailpipe: 1-3/8 inch I.D. 18-gauge aluminized steel or stainless steel tubing
- Attach a tailpipe hanger if the tailpipe extends more than 1-1/2 feet (0.46 m) from the muffler
- Additional tailpipe hangers every 2 to 3 feet (0.6 to 0.9 m) of tailpipe run
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.