Clarke — Procedure for filling the engine cooling system
Maintenance · Cooling system / heat exchanger
From a Clarke operator's manual — check it applies to your exact model before use.
Applies to: Perkins 1000 Series engine
Before you start
- Do not remove the pressure cap while coolant is at normal operating temperature.
- Do not use 100% antifreeze; premix water and antifreeze.
Procedure
- Fill with a pre-mixed solution of 50% water and 50% permanent antifreeze up to the filler neck.
- Install the pressure cap, start and run the engine until the temperature stabilizes at approximately 160-200 F (71-93 C).
- When the overflow ceases, stop the engine.
- Wait until the engine temperature drops to approximately 120 F (49 C) or lower before removing the pressure cap, then fill as necessary up to the bottom of the fill neck.
Specs & values
- Coolant pressure cap: 9 psi (62 kPa)
Full service-parts list: Perkins 1000 Series engine →
Source: Clarke operator's 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.