Author Topic: oil pump?  (Read 3784 times)

0 Members and 1 Guest are viewing this topic.

Offline tom hoek

  • Full Member
  • **
  • Join Date: Oct 2011
  • Posts: 43
  • Location: nederland bovenkarspel
  • douglas A32 terrier 1931
oil pump?
« on: 03 Feb 2012 at 10:38 »
Hello bikers
 Have another question
 You know what this is for oil pump?  its from a  350 cc Douglas A32 1932
engine.
 And how it works?

 And how high should the oil level in the crankcase?

 see photos

 Greetings from tom



Larger view
« Last Edit: 07 Feb 2012 at 20:27 by Dave »

Offline Doug

  • Global Moderator
  • ****
  • Join Date: Mar 2004
  • Posts: 3633
  • Location: Pennsylvania, USA
Re: oil pump?
« Reply #1 on: 05 Feb 2012 at 00:33 »
Tom,

The pump and timing cover is suitable for the A31 and A32. It is a dry-sump system, so there is no oil level in the crankcase. There is a oil level in the timing chest, sufficient for the lower cam gear wheel to dip in. The level is set by a drilled hole in the back wall. Excess oil flows into the crankcase chamber and is scavenged to the compartment in the petrol tank.

The oil pump does not supply oil directly to the crankshaft. It supplies oil to a spray-bar that drips oil into the path of the connecting rods. Shallow grooves on the leading edge of the crankshaft center web lead the oil into the side of the connecting rob bearings.

The attached illustrations should demonstrate what is going on in the three-stage pump.

Regards,
-Doug





« Last Edit: 14 Oct 2018 at 17:23 by Doug »

Offline tom hoek

  • Full Member
  • **
  • Join Date: Oct 2011
  • Posts: 43
  • Location: nederland bovenkarspel
  • douglas A32 terrier 1931
Re: oil pump?
« Reply #2 on: 05 Feb 2012 at 20:10 »
Hello doug

Thanks for the pictures and explanations
 it is very clear to me now  :D

greetings from Tom

Offline Daren W Australia

  • Master Member
  • ****
  • Join Date: Apr 2005
  • Posts: 492
  • Location: Sydney Australia
too many dougli not enough time!

Offline Alan Cun

  • Master Member
  • ****
  • Join Date: Feb 2007
  • Posts: 430
  • Location: Qld Central Burnett District
Re: oil pump?
« Reply #4 on: 27 Apr 2016 at 10:38 »
Looks like the pump for 600 EW or E 29