Measurement table for EPS transmission, form

OF26.20-G-3000-02A	Measurement table for EPS transmission, form
	Rangezylinder einstellen	MODEL 405.05/10/12/20/22 with TRANSMISSION 718.840, MODEL 437.42/43/46 with TRANSMISSION 718.841	AR26.20-G-1003B
	Rangezylinder einstellen	MODEL 405.210/230 with TRANSMISSION 718.840	AR26.20-G-1003NA
	Rangezylinder einstellen	Model 436.330 with transmission 718.841	AR26.20-T-1003U

Transmission	718.840 in model 405.05/100/101/102/103/120/121/122/123/200/201/220/221
	except code G48 (Electronic automated gearshift (EAS))
Transmission	718.840 in model 405.210/230
	except code G48 (Electronic automated gearshift (EAS))
	For USA/Canada only
Transmission	718.841 in model 436.330
Transmission	718.841 in model 437.420/421/425/426/430/431/435/436/465
	except code G48 (Electronic automated gearshift (EAS))

General

In the major assemblies, various types of sensors are installed which are used for recording measurement values and actual values and for controlling the function sequences in the vehicle. These measured and actual values, which can be read out using the diagnostic system and partly via the instrument cluster, are used to evaluate functions and sequences. For the individual major assemblies and systems, measurement tables are available in which conditions can be entered before and after a repair, for example. It is important that all measured values which can be recorded are entered. If problems are encountered when recording measurement values, consult your regional service manager.

Transmission measurement table

The measurement values are combined into function groups here and allow the sequences in the transmission to be clearly recognized. All measurement values are given in counts.

Acquiring the measured values

The measurement values can be read out using the diagnostic system or the display in the driver information system (FIS) in the instrument cluster and with the vehicle stationary, sufficient reservoir pressure (compressed air system filled up to shutoff pressure) and with the engine switched off (for exceptions, see Rotational speeds and Range). For this purpose, it is necessary that all transmission stages are engaged in sequence as per the measurement table and the associated measurement value in each case is entered in the measurement table. The learned values stored in the control unit during the last teach-in process provide a direct comparison with the current actual values.

1 Transmission version or engine model

The transmission designation and consecutive transmission number as well as the engine model designation must be entered here.

2 Speeds

Input speed: When the engine is idling and the vehicle is stationary (no gear engaged) the input speed is recorded by the transmission input rpm sensor (transmission control) (EPS) (B3) on the 1st gear and displayed. Depending on the position of the reversing group, the engine speed is displayed directly (position "forward") or the value reduced by the gear ratio factor for the inverter of the reversing group (approx. 0.81) (position "reverse") is displayed. The engaging and disengaging process can be assessed on the basis of the input speed.

Output speed: The output speed is only displayed when the vehicle is being driven and is dependent on the engine speed and gear. The rpm are recorded by the rotary sensor (transmission control) (EPS) (B57) in the range group.

3 Reversing group

The reversing group has two end positions: "forward" - "reverse" (exception: vehicles with hydrostatic drive). When the hydrostatic drive is switched on, the reversing group moves to the center position. The power flow to the countershaft is interrupted in the process.

4 Gear

To determine the gear measurement values, gears "1" to "4" including the neutral positions must be engaged one after the other.

5 Gate

To obtain the measurement values for the gate, gears "1" or "2" (small gate) and gears "3" or "4" (large gate) must be engaged in sequence.

6 Range

The range group has two end positions. When the vehicle is stationary, only the low-speed range group (gear "1" to "4") can be engaged. On vehicles with working and crawler gear range, it is possible to shift into 5th gear and therefore into the high-speed range group with the vehicle stationary by activating the working or crawler gear range.

If shifting errors in the range group are suspected, the values of the mechanical end stops must also be determined with the gearshift linkage disassembled, and entered in the table. The table must be used when adjusting the range group. The values for symmetrical adjustment of the range groups are determined here (see Testing and repair work, group 26.20).

7 Clutch

 When reading out the measurement values on instrument cluster, the diagnostic system must not be connected to the diagnostic connector.

 Important: Before filling out the measurement table, compile an initial quick-test report and enclose a printout.

The measurement values for the clutch are to be recorded when the clutch is closed and open. The result of large deviations from the clutch learned values (clutch in intermediate position) is that the transmission can no longer be shifted or it is no longer possible to drive with the hydrostatic drive.

 The clutch values must be recorded both in automatic mode (with clutch pedal folded in) and in pedal mode.

8 Gearshift table

All the measurement values determined previously are entered in this table. The measurement values of all transmission stages for each direction of travel and each gear are clearly recognizable. In the event of transmission problems while driving, a comparison of the measurement values determined with the instantaneous actual values by calling up measurement values 11 to 15 can make the problem recognizable.

Notes: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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____________________________________________________________________________________________________________________________
Service outlet/Operation no.	Customer


	__________________________________________________________
	Vehicle ident. no.	Repair job no.

	__________________________________________________________
	Tester: Name	Date

____________________________________________________________________________________________________________________________
License plate number Initial registration Model	Engine no.	Odometer reading: km/miles

____________________________________________________________________________________________________________________________

Transmission control (GC) - Measurement table for EPS vehicles

1. Transmission	Designation: . . . . . . . . . . . . . . . . . . . . . . . .			Consecutive no.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Engine model designation:. . . . . . . . . . . . . . . . . . . . . . . . . . . .

Equipment:
Hydrostatic drive G32 or G33	☐	Power take-off N16 or N19	☐	Transmission oil cooler G50	☐	Torque converter clutch (TWIN DISC) G31	☐


Complaint/symptom: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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Current and learned position values

2. Rotational speeds

GS	MW	no.	Designation	Description	Before repair	After repair	Remarks
					Actual value 1	Actual value 2
GS	MW	02	Input speed Transmission input rpm sensor (transmission control) (EPS) (B3)	Current Input speed			Engine "at idle" Transmission "Neutral"
GS	MW	04	Output speed Rotary sensor (transmission control) (EPS) (B57)	Current Output speed			In 1st gear at Idling speed

3. reversing group * measurement value 60 in the display of FIS corresponds to actual value 111 in the diagnostic system.

GS	MW	no.	Designation	Description	Before repair	After repair	Remarks
					Actual value 1	Actual value 2
GS	MW	11	Reversing group position value Reversing group sensor (B62)	Current reversing group position			Current value "reverse"
							Center position (only with hydrostatic transmission)
							Current value "forward"
GS	MW	16	Learned value for reversing group "reverse"
GS	MW	17	Learned value for reversing group "forward"
GS	MW	29	Reversing group aborts	Number of aborts
GS	MW	60*	Reversing group in intermediate position	Intermediate position counter			As of control unit A 001 446 62 09
GS	MW	111

4. Gear * measurement value 61 in the display of FIS corresponds to actual value 112 in the diagnostic system.

GS	MW	no.	Designation	Description	Before repair	After repair	Remarks
					Actual value 1	Actual value 2
GS	MW	12	Gear travel Gear sensor (transmission control) (EPS) (B60)	Current value for gear "1"			Engage gear "1"
				Current value for "neutral"			Engage "neutral"
				Current value for gear "2"			Engage gear "2"
				Current value for gear "3"			Engage gear "3"
				Current value for "neutral"			Engage "neutral"
				Current value for gear "4"			Engage gear "4"
GS	MW	18	Learned value for odd gear "1"/"3"
GS	MW	19	Learned value for "neutral" gear
GS	MW	20	Learned value for even gear "2"/"4"
GS	MW	30	Gear aborts	Number of aborts
GS	MW	61*	Gear in intermediate position	Intermediate position counter			As of control unit A 001 446 62 09
GS	MW	112

5. Gate

GS	MW	no.	Designation	Description	Before repair	After repair	Remarks
					Actual value 1	Actual value 2
GS	MW	13	Gate travel Gate sensor (transmission control) (EPS) (B61)	Current gate position			Current value for "gate 1-2"
							Current value for "gate 3-4"
GS	MW	23	Learned value for "gate 1-2"				Upper shift fork
GS	MW	24	Learned value for "gate 3-4"				Lower shift fork
GS	MW	31	Gate aborts	Number of aborts

6. Range (planetary gear set) * measurement value 62 in the display of FIS corresponds to actual value 113 in the diagnostic system.

GS	MW	no.	Designation	Description	Before repair	After repair	Remarks
					Actual value 1	Actual value 2
GS	MW	14	Range travel Range sensor (transmission control) (EPS) (B63)	Current Range position			Current value "Gear 1 to 4"
							Current value "Gear 5 to 8"
GS	MW	25	Learned value for low-speed range, "gear 1 to 4"
GS	MW	26	Learned value for high-speed range, "gear 5 to 8"
GS	MW	32	Range aborts	Number of aborts
GS	MW	62*	Range group in intermediate position	Intermediate position counter			As of control unit A 001 446 62 09
GS	MW	113

7. Clutch (only for vehicles with EPS gearshift system)

GS	MW	no.	Designation	Description	Before repair	After repair	Remarks
					Actual value 1	Actual value 2
GS	MW	15	Clutch travel Clutch travel sensor (transmission control) (EPS) (B2)	Current clutch position			Current "max" value Clutch closed
							Current "min" value Clutch open
			Difference between current "max" value and current "min" value
GS	MW	15	On vehicles with code (C50) Transferable steering Steering wheel in front passenger position				Current "max" value Clutch closed
							Current "min" value Clutch open
			Difference between current "max" value and current "min" value
GS	MW	28	Learned value for clutch "max"
GS	MW	27	Learned value for clutch "min"
			Difference between "max" clutch learned value and "min" clutch learned value
GS	MW	33	Clutch aborts	Number of aborts
GS	MW	34	Clutch aborts	Gear still slips in
GS	MW	54	Clutch wear

Adjustment of range group

Measurement value 14	A Mechanical travel for range group (counts)	B Shift travel of range group (counts)	Difference (B - A), (counts)	Calculated adjustment, (counts)	Effective adjustment, (counts)
LOW
High-speed
Overall difference	XXXXXX	XXXXXX		XXXXXX	XXXXXX

Example of calculation for adjustment of range group

Measurement value 14	A Mechanical travel for range group (counts)	B Shift travel of range group (counts)	Difference (B - A), (counts)	Calculated adjustment, (counts)	Effective adjustment, (counts)
LOW	300	305	5	300 + 26.5 = 326.5	327
High-speed	600	552	48	600 - 26.5 = 573.5	574
Overall difference	XXXXXX	XXXXXX	(5+48) : 2 = 26.5	XXXXXX	XXXXXX

Notes/damage history: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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8.1 Forward gearshift
Stage	MW	Neutral	Gear								Remarks
			1	2	3	4	5	6	7	8
Reversing group	11
Gear	12
Gate	13
Range	14
Clutch	15

8.2 Reverse gearshift
Stage	MW	Neutral	Gear								Remarks
			1	2	3	4	5	6	7	8
Reversing group	11
Gear	12
Gate	13
Range	14
Clutch	15

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