Mack E7, Service Manual

Page: 34 / 303

Page 2-4
200 SPECIFICATIONS
For additional information on tune-up
specifications for 1992 and 1993 E7 V-MAC
engines, refer to 1992 MACK Engine Tune-Up
Specifications No. 5-304ID92 and V-MAC
Service Manual No. 8-201. For information on
1993 V-MAC E7 engine, refer to 1993 MACK
Engine Tune-Up Specifications No. 5-305ID93.
All 1992 engine models use 1991 injection
nozzles except 1992 EM7-300 V-MAC with
20-degree Econovance, No. 710GB51AM. 1992
EM7-300 models with 20-degree Econovance
use nozzle holder assembly No. 736GB343P4
and nozzle tip No. 114GC325P3. 1992 EM7-300
V-MAC models with 10-degree Econovance, No.
710GB416CM, use 1991 EM7-300 V-MAC
injection nozzles.
Good Shop Practice — Fasteners
Make sure that all components are clean and free
from foreign material or corrosion. Use suitable
tools and assembly procedures to prevent
permanent damage to the engine components.
Metric fasteners are used on the E7 engine with a
few exceptions. The exceptions are fasteners
with English threads, as noted in the charts that
follow.
Patchlock/Hyloc fasteners follow the same
guidelines as standard fasteners.
A calibrated manual torque wrench is required to
tighten the fasteners listed in the charts. Threads,
washers and underhead of screws or washer
face of nuts should be lubricated with engine oil,
unless otherwise specified.
Some designs require individual consideration
and may deviate from torque guidelines in this
manual.
Performance Specifications (Oil Pressure and Intake Manifold Temperature)
*Dependent on outside air temperature and vehicle speed.
Description 650 rpm (idle) 1200 rpm 1750 rpm
Full Load
(Peak Torque rpm)
Oil pressure
— Cool engine 20 psi (138 kPa) 45 psi (310 kPa) 65 psi (448 kPa) —
— Warm engine 15 psi (103 kPa) 30 psi (207 kPa) 45 psi (310 kPa) —
Intake manifold
temperature
Outside air
temperature
— —
100–140°F*
(38–60
°
C)
5-101.bk Page 4 Friday, March 17, 2006 11:05 AM