<PAGE>
Exhibit 20.6
Page 1 of 3
Navistar Financial 1999 - A Owner Trust
For the Month of June 2000
Distribution Date of July 17, 2000
Servicer Certificate #14
<TABLE>
<S> <C>
Original Pool Amount $714,764,750.47
Beginning Pool Balance $484,389,584.90
Beginning Pool Factor 0.6776909
Principal and Interest Collections:
Principal Collected (Incl. Servicer Advance Repay) $16,747,869.42
Interest Collected $3,437,855.38
Additional Deposits:
Repurchase Amounts $0.00
Liquidation Proceeds / Recoveries $690,800.91
Total Additional Deposits $690,800.91
Repos / Chargeoffs $707,604.90
Aggregate Number of Notes Charged Off 151
Total Available Funds $20,842,068.79
Ending Pool Balance $466,968,567.50
Ending Pool Factor 0.6533178
Servicing Fee $403,657.99
Repayment of Servicer Advances $34,456.92
Reserve Account:
Beginning Balance (see Memo Item) $27,584,114.88
Target Percentage 10.00%
Target Balance $46,696,856.75
Minimum Balance $14,295,295.01
(Release) / Deposit ($138,852.46)
Ending Balance $27,445,262.42
Current Weighted Average APR: 8.490%
Current Weighted Average Remaining Term (months): 38.08
<CAPTION>
Delinquencies Dollars Notes
<S> <C> <C> <C>
Installments: 1 - 30 days $2,882,463.09 2,431
31 - 60 days $798,643.40 623
60+ days $244,900.44 146
Total: $3,926,006.93 2,434
Balances: 60+ days $6,533,519.05 146
Memo Item - Reserve Account
Prior Month $26,817,621.00
+ Invest. Income $138,852.46
+ Excess Serv. $627,641.42
+ Transfer (to) / from Collections Account $0.00
Beginning Balance $27,584,114.88
</TABLE>
<PAGE>
Exhibit 20.6
Page 2 of 3
Navistar Financial 1999 - A Owner Trust
For the Month of June 2000
<TABLE>
<CAPTION>
NOTES
TOTAL CLASS A - 1 CLASS A - 2 CLASS A - 3 CLASS A - 4 CLASS B NOTES
<S> <C> <C> <C> <C> <C> <C>
$714,764,750.47 $147,000,000.00 $197,000,000.00 $200,000,000.00 $145,745,000.00 $25,019,750.47
Original Pool Amount
Distributions:
Distribution Percentages 0.00% 96.50% 0.00% 0.00% 3.50%
Coupon 5.0025% 5.5500% 5.9500% 6.1300% 6.2200%
Beginning Pool Balance $484,389,584.90
Ending Pool Balance $466,968,567.50
Collected Principal $16,713,412.50
Collected Interest $3,437,855.38
Charge - Offs $707,604.90
Liquidation Proceeds/Recoveries $690,800.91
Servicing $403,657.99
Cash Transfer from Reserve Account $0.00
Total Collections Available
for Debt Service $20,438,410.80
Beginning Balance $484,389,584.91 $0.00 $116,542,965.23 $200,000,000.00 $145,745,000.00 $22,101,619.68
Interest Due $2,389,751.98 $0.00 $539,011.21 $991,666.67 $744,514.04 $114,560.06
Interest Paid $2,389,751.98 $0.00 $539,011.21 $991,666.67 $744,514.04 $114,560.06
Principal Due $17,421,017.40 $0.00 $16,811,281.79 $0.00 $0.00 $609,735.61
Principal Paid $17,421,017.40 $0.00 $16,811,281.79 $0.00 $0.00 $609,735.61
Ending Balance $466,968,567.51 $0.00 $99,731,683.44 $200,000,000.00 $145,745,000.00 $21,491,884.07
Note / Certificate Pool Factor 0.0000 0.5063 1.0000 1.0000 0.8590
(Ending Balance / Original Pool Amount)
Total Distributions $19,810,769.38 $0.00 $17,350,293.00 $991,666.67 $744,514.04 $724,295.67
Interest Shortfall $0.00 $0.00 $0.00 $0.00 $0.00 $0.00
Principal Shortfall $0.00 $0.00 $0.00 $0.00 $0.00 $0.00
Total Shortfall $0.00 $0.00 $0.00 $0.00 $0.00 $0.00
(required from Reserve)
Excess Servicing $627,641.42
(see Memo Item - Reserve Account)
Beginning Reserve Acct Balance $27,584,114.88
(Release) / Draw ($138,852.46)
Ending Reserve Acct Balance $27,445,262.42
</TABLE>
<PAGE>
Exhibit 20.6
Page 3 of 3
Navistar Financial 1999 - A Owner Trust
For the Month of June 2000
Trigger Events:
A) Loss Trigger
B) Delinquency Trigger
C) Noteholders Percent Trigger
<TABLE>
<CAPTION>
5 4 3 2 1
Feb-00 Mar-00 Apr-00 May-00 Jun-00
<S> <C> <C> <C> <C> <C>
Beginning Pool Balance $555,232,338.87 $537,539,093.52 $517,062,538.52 $502,327,257.81 $484,389,584.90
A) Loss Trigger:
Principal of Contracts
Charged Off $2,395,560.90 $1,246,287.60 $1,512,792.75 $950,683.77 $707,604.90
Recoveries $875,831.70 $1,060,161.17 $1,430,422.22 $707,246.95 $690,800.91
Total Charged Off (Months 5, 4, 3) $5,154,641.25
Total Recoveries (Months 3, 2, 1) $2,828,470.08
Net Loss / (Recoveries) for 3 Mos $2,326,171.17 (a)
Total Balance (Months 5, 4, 3) $1,609,833,970.91 (b)
Loss Ratio Annualized [(a/b) * (12)] 1.7340%
Trigger: Is Ratio > 1.5% Yes
Apr-00 May-00 Jun-00
B) Delinquency Trigger: $5,939,864.93 $5,225,660.08 $6,533,519.05
Balance delinquency 60+ days 1.14877% 1.04029% 1.34881%
As % of Beginning Pool Balance 1.04913% 1.05839% 1.17929%
Three Month Average
Trigger: Is Average > 2.0% No
C) Noteholders Percent Trigger: 3.83976%
Ending Reserve Account Balance
not less than 1% of Initial Aggregate
Receivables Balance
Trigger: Is Minimum < 1.0% No
</TABLE>
Navistar Financial Corporation
by: /s/ R. W. Cain
R. W. Cain
Vice President and Treasurer
