Allis-Chalmers — Draining, Changing Filter and Filling Lubricating System
Maintenance · Lubrication system
From a Allis-Chalmers operator's manual covering: 6138, 685, SERIES 6138, SERIES 670. Check it applies to your exact model before use.
Before you start
- Never use gasoline or other toxic or flammable fluids to clean parts
- Never use tools to tighten full flow oil filters
Procedure
- Operate engine until coolant is at minimum operating temperature; remove plug from oil pan and let all oil drain out
- Thoroughly clean all filters and surrounding areas
- Remove and replace filters (spin-on: unscrew and discard; apply oil to gasket and tighten 1/2 turn by hand; replaceable element: remove centerbolts, bodies and elements, install new element and gasket
- Install engine oil pan drain plug and fill pan to full mark with specified quantity of oil; add additional oil for bypass filter
- Crank engine 15 seconds but do not start to fill all filters and pump oil to components
- Start engine; after five minutes check filters for leaks
- Stop engine, allow oil to drain into pan and check oil level with dipstick; add oil if necessary
Specs & values
- Filter body centerbolts 45 or 50 lb-ft (61 to 80 Nm)
Source: Allis-Chalmers 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.