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A Collection of Vintage trucks and Industrial Heritage

A Collection of Vintage trucks and Industrial Heritage A Collection of Vintage trucks and Industrial Heritage

Ingersoll Rand Compressor - type 20 - size 72 CFM

History

Parts Required and Availability

Dismantling and Fault Finding.

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The start of another interesting restoration project.

Dry  stored by us for a number of years, but not before being subjected to the affect of  the  British weather by previous owners, corroding most of  the sheet metal parts.

An initial inspection showed the unit to generally be complete, but with some noticeable exeptions, whilst the wheels turned freely, the engine/ compressor was a different matter, seized solid. The  carburettor was in place but there was no sign of a magneto, just a bracket to mount it on.

Fortunately  the  brass specification plates were  intact showing  the  engine  to  be  a  Waukesha  model XA  dated  1926 with

other plates which will add to the appeal of the finished project.


Dismantling and Fault Finding.

Parts Required and Availability

Dismantling and Fault Finding.

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Investigating what was seized, the engine was the obvious place to start. If that problem couldn’t be resolved at a sensible cost the project was destined for the scrap bin.

The first bit of good news was that the compressor unit was free.

The engine itself was the problem. The second bit of good news was that it was the pistons that were wedged in the bores, the crankshaft and big ends appeared OK. The big end caps were shimmed and would therefore adjust to an acceptable tolerance.
It’s always a challenge to get the pistons out of these older engines as the big end is larger than the bore  and  the  gudgeon pln is  never  visible  above  the  block.

The  pistons  have to come  downhill  past  the  crankshaft  which needs to turn  to  permit  this  manoeuvre.  The  more  pistons that are seized  the more difficult to  dismantle 

Machines  of this  age  have  Plenty  brasswork  and  this  compressor  is no  exception.  All  carefully  removed for  cleaning prior  to  reassembly.

Parts Required and Availability

Parts Required and Availability

Parts Required and Availability

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First on the list was piston rings, 2 compression and 1 scraper ring per piston.

The pistons were 15 thou oversize and we managed to obtain replacements from Cox and Turner of Yeovil. The compression rings were 1/2 depth, needing 2 rings per groove.

The valves were beyond lapping, but attention on the Black and Decker valve refacer gave us an acceptable surface.

A Simms  magneto from our “stores” was  a perfect match for rotation, centre height and  fixing bolts. The points had been removed by a previous owner  but  our stores  came  to the  rescue  once  again.

A Simms vernier coupling was purchased and machined to fit.

We  needed plastigauge  to  check big end clearances,  eventually  compromising  on   3-4  thou  shell clearance - better not to be too tight.

Balata flat belting for the fan belt from E bay.

UNC/UNF nuts and bolts and for authenticity new Castle Nuts for many of the fixings


More to  follow



Rebuild

Will it start and make air?

Parts Required and Availability

Content to Follow

After ascertaining the firing order to be 1, 2, 4, 3. and marking TDC on the flywheel as a timing mark, a quick test run of the engine proved successful.
Further Content to follow

Blasting and Painting

Will it start and make air?

Will it start and make air?

Content to Follow

Will it start and make air?

Will it start and make air?

Will it start and make air?

Content to Follow