VILTER MANUFACTURING CORPORATION
VILTER MultiCylinder Compressor
400 Series VMC 2/01
SERVICE - 34 - Replaces all Previous Issues
TABLE 5. FACTORY RUNNING DIMENSIONS, TOLERANCES, CLEARANCES & ALLOWABLE WEAR
LIMITS FOR 440, 450 & 450XL VMC COMPRESSORS (cont’d)
ITEM
PART NAME
COMPRESSOR
SIZE
DIMENSION
TOLERANCE
CLEARANCE MAXIMUM
ALLOWABLE
WEAR
5 Piston Pin Bore ALL 1.1250 Finger Drops
(Except 450XL) 1.1248 .0002 Tight thru
(Dry)
450XL 1.1241 Tight
(ALL) 1.1238 .0003 .0007 None
.0012
Pin Dia. ALL 1.1250 +.0000 See Above .0005”
-.0002 Pin Bore
3 Connecting Rod 1.1257 .0004
Pin Bushing (I.D.) ALL 1.1254 .0003 to .001”
.0009
8 Rings, Piston Meas.
End Gap .013/.025 .012 In .025”
Compression 4.500 Bore
Oil (Solid) .013/.023 .010 .025”
Oil (Flex)
Oil (Rails) ALL
Fit in Groove Meas.
Compression .002/,004 .002 In
Oil (Solid) .0015/,004 .0025 Piston .002
Oil (Flex) Groove
With Rails
9 Suction Valve
Thickness ALL .061” ±.003” None None
6 Cylinder .036” None
Valve Seat ALL To .010” None (Lapped
Height .026” Flat to
Seat)
T o Top of Liner .134” .002” None None
To (Lapped
.132” Flat to
Seat)
Piston T op to Bottom .035” .023” .012” Must be
Of Safety Head ALL .012” Measured.
Minimum
.010”
* Dimension does not apply to assembled 450XL piston on connecting rod (piston shrink fit to wrist pin).