Deutz — Injection pump leak test
Testing & diagnosis · Fuel injection pump
From a Deutz service manual covering: BF4L 1011 T, F2L 1011, F3L 1011, F4L 1011. Check it applies to your exact model before use.
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Before you start
- Secure injection lines in accordance with specifications.
Procedure
- Connect injection pump tester to delivery valve holder.
- Turn crankshaft via V-belt pulley while bleeding tester at screw plug.
- Turn crankshaft until pressure of 150 bar is applied; pressure should not drop more than 10 bar within one minute.
- Turn crankshaft further until pressure of 300 bar is generated.
- If 300 bar is not attainable, remove injection pump.
- Remove tester and reassemble engine.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Min pressure 300 bar
- Relief valve test pressure 150 bar, drop to 140 bar in one minute permissible
Source: Deutz 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.