B3.9 and B5.9 Series Engines
Section 12 - Compressed Air System - Group 12
Compressed Air System
The following special tools are recommended to perform procedures in this section. The use of these
tools is shown in the appropriate procedure. These tools can be purchased from your local Cummins
Authorized Repair Location.
Dial Bore Gauge
Used to measure the cylinder bores.
Valve Spring Tester
Used to check spring tension.
Used to remove and install o-rings.
Used to remove the spline coupling hub.
Used to install the exhaust valve seats.
Used to remove the exhaust valve seats.