F
OR
M
ODELS
: JGW, JGR
AND
JGJ
S
ECTION
1 - D
ESIGN
S
PECIFICATIONS
& D
ATA
PAGE 1 - 14
1/01
T
ABLE
1-10: P
ISTON
TO
B
ORE
C
LEARANCE
, P
ISTON
R
ING
E
ND
G
AP
AND
W
EAR
B
AND
E
ND
G
AP
AND
R
ADIAL
P
ROJECTION
, (mm) I
NCHES
- RJ
AND
HJ C
LASS
C
YLINDERS
BORE
DIAMETER
(mm)
INCHES
PISTON TO BORE
CLEARANCE
PISTON RING END GAP
a
a. A piston/rider ring is optional for all W and R Class cylinders and is standard for R Class cylinders
with bore diameters of 13.5 to 19.5 inches (343 to 495 mm).
WEAR BANDS - NEW
NEW
MAXIMUM
END GAP
MINIMUM
RADIAL
PROJECTION
(44) 1.75
(0.76 to 0.94)
(0.64 to 0.89)
(2.67)
(1.47)
(0.19 to 0.37)
(51) 2
(0.76 to 0.94)
(0.71 to 0.97)
(2.90)
(1.65)
(0.19 to 0.37)
(92) 3.625
(1.75 to 1.96)
(1.12 to 1.73)
(5.18)
(2.95)
(0.58 to 0.79)
(98) 3.875
(1.75 to 1.96)
(1.19 to 1.80)
(5.41)
(3.15)
(0.58 to 0.79)
(108) 4.25
(1.78 to 1.98)
(1.30 to 1.91)
(5.72)
(3.45)
(0.58 to 0.79)
(117) 4.625
(1.78 to 1.98)
(1.42 to 2.03)
(6.10)
(3.76)
(0.58 to 0.79)
(130) 5.125
(1.85 to 2.06)
(1.55 to 2.16)
(6.48)
(4.17)
(0.58 to 0.79)
(140) 5.5
(1.85 to 2.06)
(1.65 to 2.26)
(6.78)
(4.47)
(0.58 to 0.79)
(152) 6
(2.01 to 2.21)
(1.83 to 2.84)
(8.53)
(4.88)
(0.64 to 0.84)
(162) 6.375
(2.01 to 2.21)
(1.96 to 2.97)
(8.92)
(5.18)
(0.64 to 0.84)
(178) 7
(2.16 to 2.36)
(2.13 to 3.15)
(9.45)
(5.69)
(0.71 to 0.91)
(187) 7.375
(2.16 to 2.36)
(2.26 to 3.28)
(9.83)
(5.99)
(0.71 to 0.91)
(203) 8
(2.29 to 2.51)
(2.44 to 3.45)
(10.36)
(6.48)
(0.76 to 0.97)
(213) 8.375
(2.29 to 2.51)
(2.57 to 3.58)
(10.74)
(6.81)
(0.76 to 0.97)
(235) 9.25
(2.39 to 2.62)
(2.82 to 3.84)
(11.51)
(7.52)
(0.81 to 0.97)
(248) 9.75
(2.39 to 2.62)
(2.97 to 3.99)
(11.96)
(7.92)
(0.81 to 0.97)
(264) 10.375
(2.46 to 2.69)
(3.15 to 4.17)
(12.50)
(8.43)
(0.81 to 1.07)
(279) 11
(2.54 to 2.77)
(3.33 to 4.55)
(13.64)
(8.94)
(0.81 to 1.07)
(292) 11.5
(2.54 to 2.77)
(3.51 to 4.72)
(14.17)
(9.35)
(0.81 to 1.07)
(330) 13
(2.74 to 2.97)
(3.94 to 5.16)
(15.47)
(10.54)
(0.86 to 1.12)
(343) 13.5
(2.74 to 2.97)
(4.11 to 5.33)
(16.00)
(10.97)
(0.86 to 1.12)
(387) 15.25
(2.92 to 3.20)
(4.65 to 5.87)
(17.60)
(12.40)
(0.91 to 1.17)
(400) 15.75
(2.92 to 3.20)
(4.80 to 6.02)
(18.06)
(12.80)
(0.91 to 1.17)
(425) 16.75
(3.12 to 3.40)
(5.11 to 6.38)
(19.13)
(13.61)
(0.97 to 1.22)
(438) 17.25
(3.12 to 3.40)
(5.26 to 6.58)
(19.74)
(14.02)
(0.97 to 1.22)
(483) 19
(3.33 to 3.61)
(5.79 to 7.42)
(22.25)
(15.44)
(0.94 to 1.24)
(495)19.5
(3.33 to 3.61)
(5.94 to 7.57)
(22.71)
(15.85)
(0.94 to 1.24)
Summary of Contents for JGJ Series
Page 30: ...FOR MODELS JGW JGR AND JGJ SECTION 1 DESIGN SPECIFICATIONS DATA PAGE 1 24 1 01 NOTES ...
Page 34: ...FOR MODELS JGW JGR AND JGJ SECTION 2 INSTALLATION PAGE 2 4 1 01 NOTES ...
Page 44: ...FOR MODELS JGW JGR AND JGJ SECTION 3 START UP PAGE 3 10 1 01 NOTES ...
Page 114: ...FOR MODELS JGW JGR AND JGJ SECTION 5 MAINTENANCE PAGE 5 42 1 01 NOTES ...
Page 120: ...FOR MODELS JGW JGR AND JGJ SECTION 6 TECHNICAL ASSISTANCE PAGE 6 6 1 01 NOTES ...
Page 130: ...FOR MODELS JGW JGR AND JGJ SECTION 7 APPENDICES PAGE 7 10 1 01 NOTES ...
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