Lubricant Viscosities

Transcription

1 Page 1 of 5 Shutdown SIS Previous Screen Product: TRUCK Model: 793C TRUCK ATY Configuration: 793C Off-Highway Truck ATY00001-UP (MACHINE) POWERED BY 3516 Engine Operation and Maintenance Manual 793C Off-Highway Truck Media Number -SEBU Publication Date 05/08/01 Date Updated 05/08/16 Lubricant Viscosities SMCS ; 7000; 7581 The proper oil viscosity grade is determined by the minimum ambient temperature at engine start-up and during operation. In order to determine the proper oil viscosity grade, refer to the "Min" column and the "Max" column in the table. The "Min" column indicates the coldest ambient temperature condition for starting a cold machine and for operating a cold machine. The "Max" column indicates the oil viscosity grade for operating the machine at the highest ambient temperature that is anticipated. Use the highest oil viscosity grade that is allowed for the ambient temperature at engine start-up and during operation. Oil viscosity grade in the differential and in the final drives should not be based solely on ambient temperatures. The duration of operation and the oil temperatures during operation should also be considered. Machines that are operated continuously should use oils that have the higher oil viscosity grade in the final drives and in the differentials. The oils that have the higher oil viscosity grade will maintain the highest possible oil film thickness. Consult your dealer if additional information is needed. Operation of the transmission with an oil viscosity grade that is too high can cause damage to the friction disc. Operation of the transmission with an oil temperature that is too low can cause damage to the friction disc. Also, damage to the friction disc can be caused by extended shift time and a slow rise in clutch pressure. Thicker oil does not provide the correct amount of oil flow in some areas and thicker oil can reduce the lube flow in some areas. For vehicle operation in the ambient temperature range of 0 to C (32 to F), SAE 30 TDTO is the recommended viscosity. i NOTICE If the ambient temperature at engine start-up or during operation is below -10 C (14 F), perform the procedures in Operation and Maintenance Manual, "Engine and Machine Warm-Up". Check the differential compartment and the final drive compartment for the proper fluid level. Failure to warm-up the oil or improper lubrication levels prior to operation will cause damage to the machine. NOTICE The brake systems on the off-highway trucks MUST use SAE 10W TDTO/TO-4 oil. Do not use FDAO or TDTO/TO-4 in the engine.

2 Page 2 of 5 Caterpillar Transmission/Drive Train Oil (TDTO) is balanced in order to provide maximum friction material life in the following components: power shift transmissions, steering systems, body hoist systems, torque converters and brake systems. Transmission/Drive Train Oil (TDTO) may decrease brake chatter in Caterpillar machines that are equipped with oil cooled disc brakes. TDTO has passed the requirements for the TO-4 oil specification. The TO-4 oil specification includes frictional requirements and gear wear requirements. Caterpillar also offers a multi-season transmission oil. Transmission Multi-Season (TMS) oil exceeds the shear stability and the performance requirements of Caterpillar TO-4M oil. TMS oil provides the maximum performance and the maximum protection for Caterpillar transmissions. Note: Multigrade oils must meet the requirements of Caterpillar TO-4Mfor use in transmissions. Multigrade oils that use high molecular weight polymers as viscosity index improvers may lose the viscosity effectiveness because of temporary shear and permanent shear of the polymer viscosity index improver. These types of multigrade oils are not recommended for Caterpillar transmissions. The Caterpillar TO-4M oil requirement includes a test for the shear stability of multigrade oil. If Caterpillar Transmission/Drive Train Oil (TDTO) is not available, use commercial oils that comply with Caterpillar TO-4 or TO-4M oil specifications. Caterpillar Final Drive and Axle Oil (FDAO) is balanced in order to provide maximum friction material life in the following components: differentials, final drives and front wheels. Final Drive and Axle Oil provides the maximum performance for the following Caterpillar components: differentials, final drives and front wheels. Note: The oil viscosities in the final drives and differentials should not be based only on ambient temperatures. The following conditions should be considered when the oil viscosity is selected: duration of operation and oil temperature during operation. Machines that operate continuously should use an oil with a high viscosity in the final drives and differentials. Oil with a high viscosity will maintain a high oil film thickness on the components. Note: Do NOT use Caterpillar gear oil that is Extreme Pressure (EP) or commercial gear oil in the components for Off-Highway Trucks. Gear oil is not compatible with duo-cone seals and the friction materials. Gear oil may decrease the efficiency of the transmission and the performance of the brakes. Note: Refer to Special Publication, SEBU5898, "Cold Weather Recommendations" for the selection of oil when the machine is operated below C (-4 F). Table 1 Recommendation for Lubricant Viscosities for Ambient (Outside) Temperatures for Off-Highway Trucks Compartment or System Oil Type and Classification Oil Viscosities Min C F Max Min Max SAE 0W20 10 SAE 0W Engine Crankcase (1) (2) Cat DEO Multigrade Cat DEO SYN (3) Cat Arctic DEO SYN Cat ECF-1 (4) API CG-4 SAE 0W SAE 5W30 30 SAE 5W

3 Page 3 of 5 Multigrade (5) SAE 10W SAE 10W SAE 15W SAE 0W20 (6) 10 SAE 0W30 (7) Transmission and Torque Converter -TMS SAE 5W30 (7) SAE 10W SAE TDTO-TMS (8) SAE 0W20 SAE 0W30 SAE 0W Steering System Cat HYDO Cat DEO Cat MTO -TMS Cat DEO SYN Cat Arctic DEO SYN Cat ECF-1 Cat BIO HYDO (HEES) API CG-4 API CF commercial BF-1 (9) SAE 5W30-22 SAE 5W -22 SAE 10W -4 SAE SAE 10W30-4 SAE 15W Caterpillar MTO Cat BIO HYDO (HEES) (9) TDTO-TMS (8) -4

4 Page 4 of 5 Hoist and Brake System SAE 0W (6) (10) SAE 10W (10) -4 Differential, Front Wheels and Final Drives Cat FDAO (11) commercial FD-1 (12) SAE SAE ( 1 ) Supplemental heat is recommended for cold-soaked starts below the minimum ambient temperature. Supplemental heat may be required for cold-soaked starts that are above the minimum temperature that is stated, depending on the parasitic load and other factors. Cold-soaked starts occur when the engine has not been operated for a period of time, allowing the oil to become more viscous due to cooler ambient temperatures. ( 2 ) API CF oils are not recommended for Caterpillar 30 Series and smaller Direct Injection (DI) diesel engines. API CF-4 oils are not recommended for Caterpillar machine diesel engines. ( 3 ) Cat Arctic DEO SYN is an SAE 0W viscosity grade oil. ( 4 ) API CI-4, API CI-4 PLUS, and API CH-4 oils are acceptable if the requirements of Caterpillar's ECF-1 (Engine Crankcase Fluid specification - 1) are met. API CI-4, API CI-4 PLUS, and API CH-4 oils that have not met the requirements of Caterpillar's ECF-1 specification may cause reduced engine life ( 5 ) API CG-4 oils are acceptable for use in all Caterpillar machine diesel engines. When API CG-4 oils are used, the oil change interval should not exceed 2 hours. API CG-4 oils that also meet API CI-4, API CI-4 PLUS, or API CH-4 must also meet the requirements of the Caterpillar ECF-1 specification. ( 6 ) First Choice: SAE 0W. Second Choice: Oils of full synthetic base stock that do not have viscosity index improvers and do meet the performance requirements of the TO-4 specification for the SAE 30 viscosity grade. Typical lubricant viscosity grades are SAE 0W, SAE 0W, and SAE 5W. Third Choice: Oils that contain a TO-4 additive package and a lubricant viscosity grade of SAE 0W, SAE 0W, or SAE 5W. ( 7 ) First Choice: Oils of full synthetic base stock without viscosity index improvers that meet the performance requirements of the TO-4 specification for the SAE 30 viscosity grade. Typical viscosity grades are SAE 0W20, SAE 0W30, and SAE 5W30. Second Choice: Oils with a TO-4 type additive package and a lubricant viscosity grade of SAE 0W20, SAE 0W30, or of SAE 5W30. ( 8 ) TDTO-TMS (Transmission Multi-Season) (Synthetic blend that exceeds the TO-4/TO-4M multigrade specification requirements). ( 9 ) Commercial biodegradable hydraulic oil must meet the Caterpillar BF-1 specification. The listed ambient temperature range is for the current Cat BIO HYDO (HEES), not for commercial BF-1 oil. ( 10 ) The maximum allowable oil viscosity at 100 C is 6.6 cst ("ASTM D445"). ( 11 ) Cat FDAO (Final Drive and Axle Oil) (exceeds the FD-1 specification requirements) ( 12 ) or a oil may be used as a second choice in place of the recommended Cat FDAO or commercial FD-1 oil. ( 13 ) Cat FDAO SAE 60 or commercial FD-1 SAE 60 is preferred in most applications, particularly continuous operation. If the ambient temperature is below -10 C (14 F), warm up the oil prior to operation. The oil must be maintained to a temperature above -10 C (14 F) during operation. If the ambient temperature is below -10 C (14 F), perform the procedures in the Operation and Maintenance Manual, "Differential Warm-up and Break-in" prior to operation. If the ambient temperature is below -25 C (-13 F), consult your Caterpillar dealer for instructions. Failure to warm up the oil prior to operation will cause damage to the machine. Grease Recommendation Cat MPGM (Multipurpose Grease w/moly) Cat MPGM is an NLGI grade 2 grease. This grease is made with petroleum base oil and a lithium complex thickener. This grease also has 3% Molybdenum disulfide (MoS 2 or "Moly"). Cat MPGM is formulated for use in applications with low severity to high severity at moderate temperatures. In addition, the Moly in Cat MPGM is a special grade that has a median particle size of 3 microns in order to meet the special requirements of some rolling element bearings. Cat MPGM is recommended for heavily loaded pin joints, and high impact applications in machines such as track-type tractors, backhoe loaders and skid steer loaders. Cat MPGM meets the NLGI certification of "GC-LB". (This certification relates to extended service intervals in

5 Page 5 of 5 automotive chassis points and in wheel bearings with disc brakes in automobiles, vans, and light trucks.) Cat MPGM grease will pump through centralized autolube systems at ambient temperatures down to -18 C (0 F) and will perform well in medium to high severity applications up to 41 C (106 F). In less severe applications, this grease can be used at higher temperatures. Note: If the application calls for a multipurpose grease with molybdenum and Cat MPGM is not available, consult the data sheets for the greases. Use a substitute that meets or exceeds the performance characteristics of Cat MPGM. Severe Applications Caterpillar has greases which are made with a Calcium Sulfonate Complex thickener. This type of grease is necessary for more severe applications. These greases provide more load carrying (galling resistance), lower wear, longer working life, exceptional water washout, and resistance to corrosion. Copyright Caterpillar Inc. All Rights Reserved. Private Network For SIS Licensees. Thu Mar 6 10:14:41 UTC