Centri-Max® Oil Filter Breather Vent; Lubrication System - Mack E-TECH SB-210-034 Service Manual

5_106_00.bk Page 47 Friday, August 4, 2000 11:17 AM
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1. Fiberglass-Reinforced Nylon Housing
2. Cover
3. Cover O-Ring
Centri-Max
The oil filter vent line between the cylinder head
cover and the filter mounting adapter on the E7
engine is not used on the E-Tech™ engine. The
vent line is replaced by a vent-to-atmosphere
fitting on the filter mounting adapter.

Lubrication System

There are several changes to the lubrication
system of the E-Tech™ engine, as compared to
the E7. The major changes are:
r
A second oil gallery along the engine right
side that provides oil to the valve roller
followers and EUPs
r
An oil pump that has a drive gear helix
opposite that of the E7
Since its introduction, the E-Tech™ engine has
evolved with changes to the oil cooler and oil filter
mounting arrangement. These changes are also
described in this section.
BDC for engine manuals and specs
https://barringtondieselclub.co.za/
DESCRIPTION & OPERATION
Figure 51 — Crankcase Breather (Current Production)
®
Oil Filter Breather Vent
4. Filter Element
5. Assembly Mounting O-Ring/Gasket
MAIN OIL GALLERY
The main oil gallery on the E-Tech™ is the same
as the E7 oil gallery with these exceptions:
On early-production engines, a special cross-
drilled plug was used at the front to facilitate oil
flow to the idler gear bore and No. 1 main bearing
bore. This special plug was factory-installed in
the cylinder blocks and should not be removed.
For current production, the block is machined to
accept a 3/4-inch cup plug in place of the special
cross-drilled plug (Figure 52).
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Figure 52 — Cross-Drilled Plug
1. Main Oil Gallery 2. Cup Plug, 3/4-Inch
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