Table of Contents
Section 4 Maintenance and Lubrication
Land Pride
It is important to note that whenever an air filter element is cleaned by any method, the person or company performing the cleaning assumes responsibility for the integrity of the filter from then on. The Donaldson warranty for air filters expires upon cleaning or servicing in any manner because the condition of the filter after servicing is completely out of their control. Therefore, on a dust ingested engine failure, there will be no warranty consideration if the air filter element has been cleaned or serviced in any manner.
A partially dirty air filter element works better than a new element. Therefore, a dirty filter element is not bad for the engine unless it is excessively restricting the air flow and engine performance is affected. The reason is the media in the filter must be porous to allow air to pass through it. When dirty air passes through the filter, the dirt plugs some of the holes in the media and actually acts as part of the filter media. When the next round of dirt enters, the first dirt helps filter out even smaller particles making the filter more efficient at stopping dirt from entering the engine. This is referred to as barrier filtration.
Of course, at some point the filter media becomes too clogged to allow air to pass.
The mowing conditions will determine the frequency of air filter element changing.
Improper Installation
Dust must not leak past the seals on each end of the air filter element. The filter must be aligned within the canister and properly seated for an effective seal so that no dirt can enter the engine.
Damaged filter, Seals or Canister
Never bang or bump the filter element against the tire or any solid object, as dust and dirt particles will be forced through the media causing continual passing of dirt into the engine. Visually inspect the outside of the air cleaner canister periodically for external damage and replace if necessary.
Incorrect Air Filter Element
Use only the correct Donaldson air filter element, Land Pride part number
The air filter must remain intact to block passage of dirt and foreign particles from entering the engine. Being inclined to disbelieve the need for more expensive air filter elements used on gasoline engines may cause some individuals to opt for a less expensive part.
The filter element must be sufficient size and construction to withstand stresses, caused by rapid cycling of the air volume demanded by the engine, without cracking or tearing under fatigue and pressure. Therefore, Land Pride and the engine manufacturers have carefully selected a reliable filter designed to fit the needs of the engines. The
filter specified is a Donaldson filter, Land Pride part number
Owners should be reminded that failure to use original equipment replacement parts is an alteration and will not be considered for warranty in the event of engine damage.
Engine Air Filter Service Procedure
1.Release clamps and remove element. Clean the canister with a damp cloth.
2.Before installing a new element, inspect it by placing a bright light inside and rotate the element slowly, looking for any holes or tears in the paper. Also check gaskets for cuts or tears. Do not attempt to use a damaged element which will allow abrasive particles to enter the engine.
3.Reinstall the dust cup. Make sure it seals all the way around the air cleaner body, then tighten the clamps.
4.Check all fittings and clamps periodically for tightness and inspect hoses for holes or cracks.
5.Periodically check the intake hose for signs of ingested dust. Locate and repair the source of ingested dirt.
6.Never operate a machine without an air filter installed.
General Engine Maintenance
Detailed instructions and recommendations for
Belt Replacement
Refer to Figure 4-11 and Figure 4-12:
Replace belts which show signs of severe cuts, tears, excessive weather checking and cracking or burns caused by slipping. Slight raveling of belt covering does not indicate failure, trim ravelings with a sharp knife.
Inspect the belt pulley grooves and flanges for wear. A new belt, or one in good condition, should never run against the bottom of the groove. Replace the pulley when this is the case, otherwise belt will lose power and slip excessively.
Never pry a belt to get it on a pulley as this will cut or damage the fibers of the belt covering.
Keep oil and grease away from belts, and never use belt dressings. Any of these will destroy the belt composition in a very short time.
!WARNING!
If the pump belt fails, loss of control may occur when operating on a slope.
30 ZRP44 & ZRP52 Zero Turning Radius Mowers | 7/14/08 |