Caterpillar C-3406B / C-346 — Brake Unit Bleed and Operation Check
Operation · Engine brake unit
For the Caterpillar C-3406B / C-346, from the Caterpillar service manual.
Browse Caterpillar generators & specs →
Before you start
- Wear eye protection and do not expose your face over the engine area; oil splashing could cause personal injury.
Procedure
- Start the engine and allow it to run 5 to 10 minutes.
- With the engine at low idle, manually depress the solenoid armature five or six times in succession.
- Inspect the installation for abnormal oil or fuel leakage and component interference; correct any problem found at this time.
- If the engine fails to start or misfires, prime the fuel system.
- Be sure the fuel line valve is open and the engine shutoff control is off.
- Loosen the fuel line nuts one at a time at the pump housing; unlock the fuel priming pump.
- Operate the priming pump until clear fuel flows from the fuel pump; tighten the fuel line nut.
- Repeat for each fuel line, then lock the fuel priming pump.
- If misfire or smoke continues, with the engine running loosen fuel line nuts one at a time until free of air bubbles; tighten to 30 lbft (41 N·m).
Tools required
- Fuel priming pump Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Fuel line nuts 30 lbft (41 N·m)
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.