RV Recommendations

1 GaugeRangeCoolant Temperature180 F 215 FAmmeterSlightly PositiveTachometer700 2620 rpmWarm Idle700 800 rpmCold Idle1000 rpmBoost0 28 psiRV RecommendationsOPERATION GUIDELINESE ngine Starting1. Perform daily maintenance before startingthe Set parking Turn the ignition switch (key) to the ONposition. Wait for the inlet air heater lamp togo Turn key to START Release key when engine Wait for oil pressure gauge to indicate normal. Oil pressure should rise within 15seconds after engine Drive moderately under light load untilengine reaches operating :If engine does not start after 15 to 20seconds of cranking, refer to section Startingthe Enginein the Operation & Maintenance(O & M) manual.

2 Do not keep starter motorengaged for more than 30 seconds at a Operating Conditions3126/3126B/3126E/C7 Engine Diagnostics (Flash Codes)1. Turn cruise control switch to OFF Move SET/RESUME switch to either positionand Record two-digit flash codes: short pause between digits long pause between codes4. Refer to Engine Diagnostics table in theO & M manual and consult your localCaterpillar Flash code 55 is No Detected Faults. Driving Tips (Fuel Economy)1. Lower coach speed = More MPG2. Use cruise control on the is Use economy mode of the Use lowest engine rpm possible (1440 to1800 rpm).5. Minimize idle time limit time on warm-upand cool-down to no more than threeminutes under normal driving Prior to shutdown, engine should be idledfor three to five minutes after full throttle orhigh power operation such as climbing asteep Anticipate traffic and avoid sudden startsand Keep tires properly inflated to the tiremanufacturer s Recommendations1.

3 Use a fuel/water Use No. 2 diesel fuel for best fuel No. 2 and No. 1 blends acceptable in coldweather Use major fuel depots to assure quality Keep fuel tank full when in Additives generally not recommended;however, biocides may be used to eliminatemicroorganism System Recommendations1. Use only distilled or deionized Antifreeze must be a low silicate type thatmeets TMC RP329, ASTM D5345, or D4985specifications. DO NOT use commercialantifreeze with high silicate contentformulated for gasoline Use conditioner or inhibitor to maintain athree to six percent concentration in coolingsystem. Requirements are different for ELC(Extended Life Coolant) consult Do not mix different antifreeze Cat ELC recommended for six-yearprotection.

4 Meets Cat EC-1 NumberSize119-5152quart bottleRV Recommendations 3126/3126B/3126E/C7 TemperatureOilAPIR angeViscosityGrade-4 F to +104 FSAE 10W30CH-4+5 F to +122 FSAE 15W40CH-4 Below 0 F, block heater or oil pan heater DEOCat DEOV iscosity(1 gallon)(5 gallon)SAE 10W303E99043E9709 SAE 15W403E97143E9713 YearsMilesHours2100,0002,000 Protection TemperatureConcentrationTo -34 F (-37 C)50% antifreeze/50% waterTo -60 F (-51 C)60% antifreeze/40% waterPart NumberSize101-28441 gallon ( )Oil PanMiles/Years26L (28 quarts)15 000/118L (19 quarts)11 000/1 Materials and specifications are subject to change without notice. The International System of Units (SI) is used in this publication.

5 CAT, CATERPILLAR, their respective logos and Caterpillar Yellow, as well as corporate and product identity used herein, are trademarks of Caterpillar and may not be used without (6-05) 2005 Caterpillar Inc. All rights reserved. Printed in Cat 3126 PublicationsCustomer Call Center Toll Free877-777-3126 Parts and Service DirectoryLEKT4302 Daily Walk-around inspection Check oil level Check coolant level Check air cleaner service indicator Drain water separatorPM Level 1 Change oil and filter Scheduled Oil Sampling (S O SSM) analysis Drain water from fuel tanks and replace fuelfilter Test coolant (supplemental coolant additive Clean with soap and water (garden hosepressure is sufficient).)

6 High pressure watercan damage fins. Inspect radiator and ATAAC aftercooler Clean crankcase breather (every other oilchange) Check belts, hoses, and clamps Lube fan drive bearing zerk fitting 3126 Band 3126E Inspect, clean batteries Replace air compressor filter (if equipped) Inspect cylinder head ground studThermostats Replace every three yearsFan Drive 3126 with serial number HEP15357 andbelow have grease zerk fittings. 3126 aboveHEP15357 and all C7 engines havepermanently lubricated 1 Recommended Change Intervals*Cat Engine OilPM Level 2 Initial valve adjustment should be done before40,000 miles for optimum engine valve adjustments required at 100, Protection(Recommended 50/50 glycol water coolant mixture)Cat Extended Life Coolant (ELC)(6-year life)Cat Extender(Add at 3 years)Lubrication SpecificationsCat FiltersOil Filter - Advanced Efficiency1R1807 Filter Group with Water Separator175-2949 Primary Fuel Filter w/Water Separator198-6378(single filter system)Fuel Filter (secondary)1R0751 Filter Kit (Antifreeze)

7 173-5326 Filter Kit [Extended Life Coolant (ELC)]173-5325 Liquid Conditioner for Antifreeze6V-3542 Test Kit for Antifreeze8T5296 Test Kit for ELC172-8851*Refer to the O & M manual for S O S and storagerecommendations.