MAINTENANCE INTERVALS - Safety
Contents
1. 264 7598 Blade Kit 5 Loosen the two bolts 7 on the blade 6 in order to adjust the width of the blade 6 Adjust the two halves of the blade inward for narrower chain groups Adjust the two halves of the blade outward for wider chain groups 7 Adjust the two halves of the blade to the appropriate width for the attached chain group and for the ground conditions 8 Tighten the two bolts 7 on the blade 6 Torque the two bolts to 105 20 N m 77 15 Ib ft2. 901177288 Illustration 52 Apply lubricant to the grease fittings for the upper slide bar and for the lower slide bar on the frame mounting bracket 102356833 Hub Lubricate SMCS Code 4184 086 Illustration 53 901177195 Front view Grease fitting is on the opposite side of the hub Apply lubricant to the grease fitting for the hub bearings Perform this procedure from the machine side 102356794 Idler Bearings Lubricate SMCS Code 6248 086 BD 75 7 1 2 901177188 Illustration 54 1 Remove cover bolt 1 in order to access grease fitting 2 2 Apply lubricant to grease fitting 2 for the idler 3 Install cover bolt 1 102252338 Tool Bar Blade Crumber Inspect Adjust If Equipped SMCS Code 6304 BG 6710 BG Inspect the tool bar blade crumber 1 for any damage Replace the tool bar blade crumber if necessary Refer to Service Manual RENR4457 Tool Bar Blade Crumber Remove and Install for additional information 50 Maintenance Section Tool Bar Blade Crumber Inspect Adjust SEBU7757 04 Scraper with Nonadjustable Blade Illustration 55 g01134001 1 Inspect the scraper 2 for any damage Replace the scraper if necessary Refer to Service Manual RENR4457 Scraper Remove and Install for additional information 2 Inspect the scraper for proper movement The scraper must be able to move when a small force is appli
3. inside of the chain to the bottom of the boom should be approximately 38 mm 1 50 inch for the T6B trencher Adjust the chain if necessary Note A new chain stretches more readily than a chain with more usage Adjust Illustration 46 901177161 1 Use a One Inch box wrench and remove one drain plug 3 2 Use a wrench with 18 MM box end in order to loosen four clamp bolts 1 while you loosen nuts 2 Repeat this procedure for each clamp bolt 1 Illustration 47 g01032051 Some components are removed for clarity 3 Apply grease to purge valve 5 in order to adjust the chain tension so that the distance A between the inside of the chain to the bottom of the boom should be approximately 68 5 mm 2 50 inches for the T9B and T15B trenchers The distance A between the inside of the chain to the bottom of the boom should be approximately 38 mm 1 50 inches for the T6B trencher 4 Hold clamp bolts 1 with the 18 MM box wrench while you tighten the nuts 2 5 Torque the four nuts 2 to 100 N m 73 75 Ib ft Continue to torque all four nuts in order to ensure that all four nuts are evenly torqued to 100 N m 73 75 Ib ft 6 Use a One Inch box wrench to replace drain plug 3 102356790 Chain Teeth Inspect Replace SMCS Code 671C 040 TTH 671C 510 TTH Use the following procedure to access the lower half of the chain tool Inspect each tooth of the chain tool Replace each toot
4. b Move the idler inward in order to increase slack in the chain c Remove the chain from the trencher 2 Remove idler 9 from boom 8 Remove drain plug 3 and remove purge valve 5 3 Pull pushrod 7 and remove the adjuster cylinder 6 from boom 8 NOTICE Care must be taken to ensure that fluids are contained during performance of inspection maintenance test ing adjusting and repair of the product Be prepared to collect the fluid with suitable containers before open ing any compartment or disassembling any compo nent containing fluids Refer to Special Publication NENG2500 Caterpillar Dealer Service Tool Catalog for tools and supplies suitable to collect and contain fluids on Caterpillar products Dispose of all fluids according to local regulations and mandates 4 Push pushrod 7 back into adjuster cylinder 6 in order to drain the grease 48 Maintenance Section Frame Mounting Bracket Inspect SEBU7757 04 Note After drainage insert a new purge valve Use Teflon tape on the threads 5 Install adjuster cylinder 6 into boom 8 Make sure that purge valve 5 aligns with the hole for drain plug 3 a Install new bolt 4 6 Install idler 9 into boom 8 Replace clamp bolts 1 and nuts 2 into the original position 7 Install the chain on the trencher 8 Apply grease to the purge valve in order to adjust the chain tension so that the distance A between
5. MAINTENANCE INTERVALS Operation and Maintenance Manual Excerpt 2010 Caterpillar CATERPILLAR All Rights Reserved A QO 7757 04 CATERPILLAR Operation and Maintenance Manual T6B T9B and T15B Trenchers KSK1 Up T6B AJ1 Up T9B SLW1 Up T15B SEBU7757 04 45 Maintenance Section Maintenance Interval Schedule 03671827 Maintenance Interval Schedule SMCS Code 6700 When Required Tool Bar Blade Crumber Inspect Adjust 49 Daily Chain 46 Chain Teeth Inspect Replace 46 Frame Mounting Bracket Inspect 48 Idler Bearings Lubricate 49 Tool Bar Blade Crumber Inspect Adjust 49 Every 40 Service Hours or Weekly Frame Slide Bar Upper and Lower Lubricate 49 H b Lubricate 49 46 Maintenance Section Chain Inspect Adjust SEBU7757 04 102356749 Chain Inspect Adjust SMCS Code 671C 025 671C 040 Inspect Illustration 45 g01177158 Inspect the chain for any wear or damage Replace the chain if necessary Inspect the chain for the proper amount of chain tension The distance A between the inside of the chain to the bottom of the boom should be approximately 63 5 mm 2 50 inch for the T9B and T15B trenchers The distance A between the
6. ed If the scraper is unable to move or if the scraper is easily moved inspect the torque on the four bolts 3 3 Torque the four bolts to 50 10 N m 37 x 7 Ib ft Scraper with Adjustable Blade Illustration 56 901134002 1 Inspect the scraper 4 for any damage Replace the scraper if necessary Refer to Service Manual RENR4457 Scraper Remove and Install for additional information 2 Inspect the scraper for proper movement The scraper must be able to move when a small force is applied If the scraper is unable to move or if the scraper is easily moved inspect the torque on the four bolts 5 3 Torque the four bolts to 50 10 N m 37 x 7 lb ft Note Chain groups are available with different configurations of teeth Chain groups are available in several widths Refer to Service Manual RENR4457 Trencher Tooth for additional information on replacing chain groups or replacing the entire chain 4 Ifthe chain group is replaced inspect the blade on the scraper 6 for proper width If a chain group that has a different width has been mounted to the trencher the width of the blade will need to be adjusted Note The adjustable blade 6 is available in two different widths in order to properly match the width of the chain group Table 9 Adjustable Scraper Blade Kit Adjustable Width Part Number 152 4 to 203 2 mm 264 7597 Blade Kit 6 to 8 inch 254 0 to 304 8 mm 10 to 12 inch
7. h of the chain as required 1 Enter the host machine Fasten the seat belt 2 Lower the armrest if equipped 3 Start the engine 4 Disengage the parking brake 5 Raise the trencher slightly off the ground SEBU7757 04 47 Maintenance Section Chain Teeth Inspect Replace 6 Activate the auxiliary hydraulic control in order to rotate the lower half of the chain to the top side of the boom Then release the auxiliary hydraulic control 7 Lower the trencher to the ground 8 Stop the engine and exit the host machine Inspect Illustration 48 g01177184 Inspect each tooth of the chain tool for wear Replace the teeth if necessary Ensure that the bolts for each tooth are tightened Replace Teeth Illustration 49 g01030154 Perform the following procedure on one chain link and remove the chain tooth from the chain assembly 1 Remove nuts 2 2 Remove bolts 3 and remove tooth 1 Retain brackets 4 and retain spacers 5 as required Note Ensure that you replace the worn tooth 1 with an identical tooth Replace worn components or damaged components with new hardware 3 Replace the chain tooth Install the hardware in the proper order Replace Chain Perform the following steps in order to replace the chain from the trencher Illustration 50 901032127 1 Use a wrench with 18 MM box end and remove four clamp bolts 1 and nuts 2 a Remove bolt 4
8. nd standard cup teeth The chain group is used for ground conditions that are medium digging up to hard digging The chain group is used for breaking the ground and for removing the soil from the trench 50 50 Rock Frost A 50 50 rock frost chain group has rock teeth and standard cup teeth The chain group is used for ground conditions that are medium digging up to hard digging The chain group is used for breaking the ground and for removing the soil from the trench The chain group is a great pick and shovel Rock Frost A rock frost chain group has rock teeth on every link pitch The chain group is used for digging conditions that are severe The chain group is used for digging soil such as caliche rock asphalt frost and hard clay Consult your Caterpillar dealer for additional information on replacement chain groups 101988179 Frame Mounting Bracket Inspect SMCS Code 7050 040 MT Illustration 51 901030185 Rear view SEBU7757 04 49 Maintenance Section Frame Slide Bar Upper and Lower Lubricate Inspect upper angled plate 1 and ensure that the plate is not bent or otherwise damaged Inspect holes 2 for wear and for damage Inspect lower angled plate 3 and ensure that the plate is not bent or otherwise damaged Consult your Caterpillar dealer if any wear is suspected or any damage is suspected 102357003 Frame Slide Bar Upper and Lower Lubricate SMCS Code 7050 086 BAR
9. the inside of the chain to the bottom of the boom should be approximately 68 5 mm 2 50 inches for the T9B and T15B trenchers The distance A between the inside of the chain to the bottom of the boom should be approximately 38 mm 1 50 inches for the T6B trencher 9 Hold clamp bolts 1 with the 18 MM box wrench while you tighten the nuts 2 10 Torque the four nuts 2 to 100 N m 73 75 Ib ft Continue to torque all four nuts in order to ensure that all four nuts are evenly torqued to 100 N m 73 75 Ib ft 11 Use a One Inch box wrench to replace drain plug 3 Note A new chain stretches more readily than a chain with more usage Adjust the chain if necessary Chain Groups Chain groups are available with different configurations of teeth Chain groups are available in several widths Refer to Service Manual RENR4457 Trencher Tooth for additional information on replacing chain groups or replacing the entire chain Single Standard A single standard chain group has standard cup teeth on alternate link assemblies The chain group is used for ground conditions that are soft digging up to normal digging The chain group is used for digging sticky materials such as clay Double Standard A double standard chain group has standard cup teeth on every link assembly The chain group is used for digging sand or other soft material 50 50 Carbide A 50 50 carbide chain group has carbide teeth a
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