Cummins/Onan — Complete Evaporator/Heater Assembly Installation
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
- Fuel and electrical systems present the hazard of severe personal injury; check before drilling into the compartment floor to avoid hitting the fuel tank, fuel lines or electrical lines. Do not drill into frame members.
Procedure
- Remove the sleeper bunk and other items that interfere with the installation.
- Trim the template and tape it to the floor of the compartment.
- Mark each hole location and drill 1/8-inch pilot holes to check for clearance.
- Drill each of the mounting and routing holes to size.
- Install the evaporator/heater assembly and secure it to the compartment floor.
- Direct the blower air outlet into the existing sleeper air outlet or install a new outlet.
- Install a 7/16-inch I.D. vinyl drain hose on the drain tube if needed.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Drill 1/8-inch pilot holes before drilling to size
- Vinyl drain hose 7/16-inch FridayParts $221.94 I.D.
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.