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Series 1000 and 1500 23.13 . The double idler pivot bracket is held to the 24.3 . There is no adjustment to the relief valve , but full frame by the same bolt that holds the fore - most travel of the linkage should be checked if the of the two pulleys . The rear pulley can be easily drive system is losing power or ground speed . removed from the bracket . It is necessary to take See Figure 24.3 . the fenders off to remove the front pulley or the bracket itself . 23.14 . Install the drive belt by reversing the order of the removal process . â€¢ Apply anti - seize compound to the crankshaft before installing the PTO clutch . â€¢ Tighten the crankshaft bolt to a torque of 38 - 50 ft . - lbs . on assembly . â€¢ Test the drive system and all tractor safety fea - Relief valve linkage tures in a clear area that is free of hazards and by standers before returning the tractor to ser - vice . 24 . DRIVE SYSTEM ADJUSTMENT : HYDROSTATIC LT Figure 24.3 24.1 . The relief valve is operated using a small rod that is visible at the bottom right corner of the 24.4 . Symptoms of a linkage that is out of adjustment rear of the tractor frame . See Figure 24.1 . include : â€¢ Low ground speed in either direction with no unusual noises from the transaxle . One possible Relief valve rod cause for low ground speed is a linkage that does not transfer all of the pedal travel to the input arm on the transaxle . â€¢ â€œ Creeping â€� when the transaxle is in neutral position . â€¢ Whining or growling when the tractor is in Neu - tral with the brake applied . â€¢ The creeping and whining symptoms usually accompany one - another , indicating that the link - age is not properly centered around Neutral . â€¢ Low ground speed in one direction only ( For - ward or Reverse ) may accompany whining , Figure 24.1 growling or creeping in Neutral if the linkage is out of adjustment . 24.2 . Pulling the rod out and locking it in the upper â€¢ Low ground speed , accompanied by excessive portion of the keyhole enables the tractor to be noise is likely to be an internal problem or a pushed , but disables the hydraulics of the drive brake that is dragging or out of adjustment . system by opening a valve that releases the hydraulic pressure from the motor circuit . 24.5 . Begin linkage adjustment by inspecting the link - age . Linkages on equipment that has been in the field are usually out of adjustment because the linkage is binding , worn , bent , or tampered with . 24.6 . Replace any worn or damaged parts before adjusting the linkage . 39
Series 1000 and 1500 24.7 . Turn - off the engine and allow it to cool before 24.15 . Set the parking brake , and remove the drive starting to work on the tractor . To gain access to pedal using a T - 40 driver . See Figure 24.15 . the control linkage , perform the following three steps : T - 40 Screws 24.8 . Remove the cutting deck . 24.9 . Lift and safely support the rear of the tractor . 24.10 . Remove the rear wheels using a 3 / 4 â€� wrench . 24.11 . Move the control pedal through itâ€™s range of travel ( with the parking brake released ) and look for the following conditions that will cause loss of linkage motion : â€¢ Pedal loose on the pedal shaft . â€¢ Loose arm that connects the pedal shaft to the control rod . â€¢ Worn bushings supporting the pedal shaft . â€¢ Worn ferrule or an elongated hole where ferrule Figure 24.15 connects to pedal shaft . 24.16 . Remove and discard the cotter pins that hold the 24.12 . Disconnect the control rod from the pedal shaft inboard bushing in place on both the speed con - by removing the cotter pin that secures the trol assembly and the brake control assembly . adjustable ferrule on the rod to the shaft . See Figure 24.16 . See Figure 24.12 . Cotter pins Adjustable ferrule Figure 24.16 Figure 24.12 24.13 . Confirm that the pedal shaft moves freely in the bushings , and does not bind . 24.14 . Worn pedal shaft bushings are easily replaced using the following 5 steps . NOTE : It is recommended to replace all four bushings at the same time . 40
Series 1000 and 1500 24.17 . Remove the washers and inboard bushings from 24.21 . Install the drive pedal , tightening the screw that both shafts . secures it to a torque of 250 in - lbs . See Figure 24.17 . 24.22 . Move the pedal through itâ€™s range of travel to check for bind . If binding is encountered : â€¢ Bind in a portion of the travel may be caused by a bent pedal shaft . â€¢ Constant bind is likely to be caused by a bent bracket . â€¢ Also check for interference between the park brake and cruise control interlocks . 24.23 . Correct any source of binding . The pedal shaft is easily removed at this point . The bracket may be straightened if damage is minor . 24.24 . Confirm that no unsafe conditions will arise from starting the engine . Figure 24.17 24.25 . Start the engine , and operate it at top - no - load 24.18 . Slide both shafts outboard far enough to create speed . Note the operation of the transaxle with clearance to remove the outer shaft bushings , the pedal linkage disconnected : An assistant and remove the bushings . See Figure 24.18 . may be required . â€¢ Growling or whining with brake applied indicates that the input arm on the transaxle needs adjust - ment . â€¢ Movement of the left rear wheel or the right drive hub with the brake released indicates that the input arm on the transaxle needs adjustment . â€¢ With the hydro control rod disconnected from the pedal shaft , the input arm on the transaxle should return to Neutral . 24.26 . If the transaxle does not return properly to neu - tral , adjust the input arm to correct the issue , then proceed with the following step . Review the next section for procedures . 24.27 . If the transaxle returns properly to neutral : Figure 24.18 â€¢ Adjust ( if necessary ) and reconnect the hydro control rod . NOTE : The inner bushings are hex flange bush - ings . The outer bushings are similar , but are â€¢ Install the right rear wheel on the tractor , tighten - open on one side . The â€œ tooth â€� in the top facet of ing the lug nuts to a torque of 350 - 500 in . - lbs . the bracket that supports the bushing registers in â€¢ Lower the tractor to the ground and test the the open side of each bushing . operation of the drive system in a safe area that 24.19 . Clean any corrosion or dirt from the surfaces is free of hazards , obstacles , and by - standers . where the pedal shaft contacts the bushing , and â€¢ Install the cutting deck , test all safety features , slip the new bushings into place . and return the tractor to service if everything NOTE : Lubrication with grease may accelerate works properly . busing wear . If lubrication is applied it should be in dry form such as graphite or PTFE ( Teflon ) . 24.20 . Secure the pedal shafts with new cotter pins and previously removed washers . 41