Mack ASET AC, Service Manual, Page: 221 / 536

Page 208
REPAIR INSTRUCTIONS, PART 1
The height of the cylinder sleeves above the
cylinder block deck (under the same cylinder
head) can vary as long as all are within
specification. Refer to the SPECIFICATIONS
section of this manual and ensure the cylinder
sleeve height matches the “Cyl. Sleeve Flange
Channel-to-Block Deck” extension specification.
Cylinder sleeve extension heights above the
cylinder block deck are different between the
ASET™ AC and AI/AMI engine models.
7. Using dial bore gauge J 5347-B, or
equivalent, check the cylinder sleeve for
out-of-round and taper limit (Figure 212).
Take readings in two directions, 90 degrees
apart, at each of three levels.
Cylinder sleeve ID maximum: 4.877 inches
(123.876 mm)
Cylinder sleeve ID minimum: 4.875 inches
(123.825 mm) (The cylinder sleeve ID may
be a minimum 4.872 inches [123.749 mm]
due to close-in from the press fit.)
212
Figure 212 — Checking Cylinder Sleeve for
Out-of-Round or Taper
HONING THE CYLINDER SLEEVE BORE
All MACK engines currently produced have fine
precision-finished cylinder sleeves. Because of
the precision finish, honing is NOT ALLOWED.
Particles from the honing process which become
wedged in the pattern are impossible to
completely remove and can cause further
damage.
Piston Cooling Spray Nozzle
Installation
[219 RV]
SPECIAL TOOL REQUIRED
앫
Two-Piece Piston Cooling Nozzle Aimer
J 39045
INSTALLATION PROCEDURE
Refer to Figure 213.
1. Using a liberal amount of lubricant, install
the elastomer sleeve on the locator tube.
2. Install a retaining screw in the spray nozzle
bracket.
3. Position the spray nozzle locator tube in the
cylinder block oil passage. Then, using
torque wrench J 24406, or equivalent,
tighten the retaining screw to the specified
torque, 15 lb-ft (20 N
폷
m).
5-111.bk Page 208 Monday, July 10, 2006 2:26 PM