Weichai America Corp.
Revision: October 2018 24
Maintenance for Long-Term Storage
Weichai America Corp. runs all completed engines prior to shipping to customers. Your engine
was hot tested and calibrated using fully formulated coolant in the cooling system and Mobil
Pegasus 805 40W Natural Gas Engine Oil prior to being drained and shipped to you. Your
engine can be stored Six (6) to twelve (12) months depending on humidity control in storage
without any further service. Engines stored outdoors or in a high humidity environment may
require more frequent treatment. All engine openings should be covered when you receive your
engine. Please be sure to keep engine openings sealed during engine storage. In the event that
your engine will be stored for extended times, you will need to follow recommended procedures
for preserving your engine from rust.
No service to the cooling system should be required for engines stored less than one (1) year. If
storing an engine for more than one year, remove thermostat(s), flush engine coolant passages
with straight antifreeze solution, cover all openings, and return to storage.
Other procedures for storage:
• Fill or mix a preservative oil according to oil manufacturer’s instructions. Mobilarma 524 or
equivalent. Consult with your oil supplier for comparable products. Operate engine at high
idle, no load until it reaches operating temperature in order to coat all surfaces with
preservative oil solution.
• If engine is not runnable, crank for a maximum of 30 seconds with two minute rests
between cranking until all surfaces are coated. If unable to crank engine, bar engine over
several times and use a spray to put preserving oil solution into the cylinders through
spark plug holes, intake and exhaust ports, turbo inlet, etc. This will require a different
mixture in order to penetrate and coat internal surfaces. Mobil Vaprotec Light or
equivalent product. Consult with your oil supplier for comparable products.
• Clean the engine of dirt, rust, oil, water, etc. Inspect exterior and paint any areas required.
Contact your Weichai America parts supplier for touch up Weichai blue paint.
• Brush or spray all unpainted steel or iron surfaces such as flywheels, gear teeth, and
starter pinions, with a preserving solution. Mobilarma 247 or equivalent. Consult with your
oil supplier for comparable products.
• Remove tension from all belts.
• Cover and seal all openings. Tag with date and procedure used to preserve.
• Cover engine but allow for air circulation to prevent condensation.
• Inspect periodically and reapply preservative oil solution if necessary.
• Follow preservative oil manufacturer’s instructions for startup when removing engine from
storage.
Document Courtesy of Fly Parts Guy Co.
www.FlyPartsGuy.com
Document Courtesy of Fly Parts Guy Co.
www.FlyPartsGuy.com