My 1943 RCAF "WIRELESS MECHANICS/WIRELESS OPERATORS" Students' Handbook contains a brief reference to the GR17 (AR88) - (10D/5479) General Purpose Ground Station Receiver (RCA). There are no schematics but it lists the number and quantity of valves as well as all the chokes and filters and their location in a plan view of the set. There are some maintenance tips but no mention of any lubricant used. If you wish I can scan and email you what info is included on your set.
CHIMO!
Derek H.