Air Compressor Mount Problem

[dabtl]

I have a missing bolt on the air compressor side mount. Know what I mean?

It is leaking oil. Anyone know the size of the bolt?

What kind of compressor oil and where do I fill it would help also.

 

[shenkmen]

I have a missing bolt on the air compressor side mount. Know what I mean?

It is leaking oil. Anyone know the size of the bolt?

What kind of compressor oil and where do I fill it would help also.

The multifuel's compressor is lubed by engine oil. It is filled through the cap on your valve cover.

No idea on the bolt size.

 

[Tinwoodsman]

I had the same thing on mine. I just removed one of the other bolts and matched it. If I remember correctly, it was a course thread.

 

[Heavysteven]

That's not good. Maybe it came loose from vibration. I would pull another out match, replace, and pull/replace the gascket.

The aircompressor is lubed by engine oil. The only thing that takes air compressor oil is the air pack on the brake system.

 

[Warthog]

From the -34 parts manual and www.wbparts.com


Item 17 is part number 10935517 NSN 5307-00-912-5635 - 7/16" stud



5307-00-912-5635 Characteristics Data
MRC Criteria Characteristic
MATT MATERIAL STEEL COMP 4140 OR STEEL COMP 8640 OR STEEL COMP 8637
ABHP OVERALL LENGTH 1.880 INCHES NOMINAL
THSD THREAD SERIES DESIGNATOR UNC NUT THREAD UNS STUD THREAD
CQJX NOMINAL THREAD SIZE 0.438 INCHES NUT THREAD 0.438 INCHES STUD THREAD
AAJD THREAD CLASS 3A NUT THREAD
CMLP THREAD QUANTITY PER INCH 14 NUT THREAD 14 STUD THREAD
AAJE THREAD PITCH DIAMETERS 0.3939 TO 0.3959 INCHES STUD THREAD
AAJF THREAD DIRECTION RIGHT-HAND NUT THREAD RIGHT-HAND STUD THREAD
AASA THREAD LENGTH 0.938 INCHES MAXIMUM NUT THREAD 0.750 INCHES MAXIMUM STUD THREAD



Item 19 is part number MS90728-59 NSN 5305-01-140-9118 - 3/8" Bolt



5305-01-140-9118 Characteristics Data
MRC Criteria Characteristic
THSD THREAD SERIES DESIGNATOR UNC
AHYM NOMINAL THREAD DIAMETER 0.375 INCHES
CMLP THREAD QUANTITY PER INCH 16
AAJD THREAD CLASS 2A
AAJF THREAD DIRECTION RIGHT-HAND
AASA THREAD LENGTH 0.813 INCHES MINIMUM AND 0.875 INCHES MAXIMUM
AASB FASTENER LENGTH 0.813 INCHES MINIMUM AND 0.875 INCHES MAXIMUM
MATT MATERIAL STEEL OVERALL
MDCL MATERIAL DOCUMENT AND CLASSIFICATION SAEJ429 GRADE 8 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM A354 GRADE BD ASSN STD SINGLE MATERIAL RESPONSE OVERALL
SFTT SURFACE TREATMENT ZINC AND CHROMATE OVERALL
STDC SURFACE TREATMENT DOCUMENT AND CLASSIFICATION ASTM B633 TY 2 SC 3 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
CQFM HARDNESS RATING 33.0 ROCKWELL C MINIMUM AND 39.0 ROCKWELL C MAXIMUM OVERALL
CQBC MINIMUM TENSILE STRENGTH 11600 POUNDS PER SQUARE INCH
CQHQ MINIMUM YIELD STRENGTH 120000 POUNDS PER SQUARE INCH
AASK HEAD STYLE C1 HEXAGON
AASU HEAD HEIGHT 0.226 INCHES MINIMUM AND 0.243 INCHES MAXIMUM
AATB WIDTH BETWEEN FLATS 0.5510 INCHES MINIMUM AND 0.5625 INCHES MAXIMUM

 

[dabtl]

The multifuel's compressor is lubed by engine oil. It is filled through the cap on your valve cover.

No idea on the bolt size.

Live and learn I guess. Turned out to be a coarse thread.