Page 238 - Practical Machinery Management for Process Plants Major Process Equipment Maintenance and Repair

220 Major Process Equipment Maintenance and Repair

Inspect Compressor Piston Ring Lands. While piston is out of cylinder
inspect and measure width and depth of compressor piston ring grooves
and record measurements. See also Figure 5-17.
a Inspect and Measure Compressor Cylindez During the previous steps,
use inside micrometers to measure wear on compressor cylinder bore.
Measurements at three points along the axial length of piston travel, and
both vertically and horizontally at each point, should be made. Record
all six inside diameter measurements. See also Table 5-2.

011 System
Clean Crankcase Breather System and Engine. Clean all foreign ma-
terials from vent line.
Change Crankcase Oil-Engine.
Chge Governor Oil. Drain and replace oil in reservoir with recom-
mended oil.
Change Oil Filter-Turbocharger.
Check and Record Turbocharger Oil Pressure.

Routine Checks and Adjustments

1. Check Compressor Piston Rod Packing. Visually inspect packing
box for excessive gas leak. Be certain that distance piece covers
are replaced, and that vents and drains are working properly.
2. Run Vibration Check- Turbocharger. Complete with special
equipment.
3. Inspect Rocker Am and Push Rods. Visually inspect to be certain
they are properly lubricated and each shows no excessive wear.
4. Adjust Lifers.
Solid Lifers. Adjust tappet to allow for proper clearance. See
manufacturer’s recommendations in engine operating manual.
Hydraulic Lifers. Physically examine each lifter to be certain
that each is operating on a hydraulic cushion. Be Certain that lifter
is operating near mid point of full range travel.
5. Check Timing. Set ignition timing per manufacturers recommen-
dations to achieve maximum fuel gas economy. All ignition
magnetos should be quipped with adjustable cradle to permit tim-
ing change without engine shutdown.
6. Check, Clean, and/or Change Spark Plugs. Check plugs with
spark indicator to be certain that proper spark is generated and
plug is not grounded. Clean existing plugs with abrasive blast and
reset gap.